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Gordon JK, Girish G, Berrocal VJ, Zhang M, Hatzis C, Assassi S, Bernstein EJ, Domsic RT, Hant FN, Hinchcliff M, Schiopu E, Steen VD, Frech TM, Khanna D. Reliability and Validity of the Tender and Swollen Joint Counts and the Modified Rodnan Skin Score in Early Diffuse Cutaneous Systemic Sclerosis: Analysis from the Prospective Registry of Early Systemic Sclerosis Cohort. J Rheumatol 2017; 44:791-794. [PMID: 28298560 DOI: 10.3899/jrheum.160654] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2017] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To determine the inter/intraobserver reliability of the tender and swollen joint counts (TJC, SJC) and the modified Rodnan Skin Score (mRSS) in diffuse cutaneous systemic sclerosis (dcSSc) and to assess content validity of the TJC/SJC. METHODS Ten rheumatologists completed the SJC, TJC, and mRSS on 7 patients. Musculoskeletal ultrasound (MSUS) was performed. RESULTS Interobserver and intraobserver reliability for the TJC was 0.97 and 0.99, for the SJC was 0.24 and 0.71, and for the mRSS was 0.81 and 0.94, respectively. MSUS abnormalities did not correspond with SJC/TJC. CONCLUSION We demonstrate excellent inter- and intraobserver reliability for the mRSS and TJC in dcSSc. However, the SJC and TJC did not correspond to MSUS.
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Affiliation(s)
- Jessica K Gordon
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA. .,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program.
| | - Gandikota Girish
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Veronica J Berrocal
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Meng Zhang
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Christopher Hatzis
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Shervin Assassi
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Elana J Bernstein
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Robyn T Domsic
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Faye N Hant
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Monique Hinchcliff
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Elena Schiopu
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Virginia D Steen
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Tracy M Frech
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
| | - Dinesh Khanna
- From the Department of Rheumatology, and Department of Epidemiology and Biostatistics, Hospital for Special Surgery; Department of Rheumatology, Columbia University, New York, New York; Department of Radiology, and Department of Biostatistics, University of Michigan; University of Michigan Scleroderma Program, Ann Arbor, Michigan; Department of Rheumatology, University of Texas, Houston, Texas; Department of Rheumatology, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Rheumatology, Medical University of South Carolina, Charleston, South Carolina; Department of Rheumatology, Northwestern University, Chicago, Illinois; Department of Rheumatology, Georgetown University, Washington, DC; Department of Rheumatology, University of Utah, Salt Lake City, Utah, USA.,J.K. Gordon, MD, MSc, Department of Rheumatology, Hospital for Special Surgery; G. Girish, MBBS, Department of Radiology, University of Michigan; V.J. Berrocal, MSc, PhD, Department of Biostatistics, University of Michigan; M. Zhang, PhD, Department of Epidemiology and Biostatistics, Hospital for Special Surgery; C. Hatzis, BA, Department of Rheumatology, Hospital for Special Surgery; S. Assassi, MD, MS, Department of Rheumatology, University of Texas; E.J. Bernstein, MD, MSc, Department of Rheumatology, Columbia University; R.T. Domsic, MD, MPH, Department of Rheumatology, University of Pittsburgh; F.N. Hant, DO, Department of Rheumatology, Medical University of South Carolina; M. Hinchcliff, MD, MS, Department of Rheumatology, Northwestern University; E. Schiopu, MD, University of Michigan Scleroderma Program; V.D. Steen, MD, Department of Rheumatology, Georgetown University; T.M. Frech, MD, MS, Department of Rheumatology, University of Utah; D. Khanna, MD, MS, University of Michigan Scleroderma Program
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