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Parfrey H, Leonard C, Gibbons MA, Armstrong E, Harris E, Frank R, Sharp C, Percival F. P196 Healthcare utilisation by patients with Idiopathic Pulmonary Fibrosis; observations from the UK pirfenidone Named Patient Programme. Thorax 2013. [DOI: 10.1136/thoraxjnl-2013-204457.348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Jokela V, Lassila R, Szanto T, Joutsi-Korhonen L, Armstrong E, Oyen F, Schneppenheim S, Schneppenheim R. Phenotypic and genotypic characterization of 10 Finnish patients with von Willebrand disease type 3: discovery of two main mutations. Haemophilia 2013; 19:e344-8. [PMID: 23834637 DOI: 10.1111/hae.12225] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/06/2013] [Indexed: 11/25/2022]
Abstract
Severe von Willebrand's disease (VWD) type 3 is a rare autosomal-recessively inherited bleeding disorder, showing considerable genotypic heterogeneity. We investigated the phenotype in correlation with the genotype in Finnish type 3 VWD patients. Ten patients previously diagnosed with VWD type 3 treated at the Coagulation Disorder Unit in Helsinki University Hospital were re-evaluated for bleeding tendency and treatment. Phenotypic characterization included coagulation and platelet function testing confirming the diagnosis. The genotype was assessed by initial screening for the common c.2435delC mutation and subsequently if needed, by analysing all 51 coding exons of the von Willebrand factor gene. Our result confirmed the diagnosis of type 3 VWD for all 10 patients. We discovered two common mutations: nine of the 20 alleles (45%) were found to carry the c.2435delC frameshift mutation, previously described to be frequent in countries surrounding the Baltic Sea. The nonsense mutation c.4975C>T (p.R1659X) was found on 8/20 (40%) of the alleles. In addition, three novel mutations, a potential splice site mutation (c.874+2T>C) and two frameshift mutations (c.1668delC and c.2072delCCinsG) were found. Seven patients were homozygous and three compound heterozygous for the reported mutations. This study indicates that mainly two mutations (c.2435delC and p.R1659X) cause the majority of type 3 VWD in Finland. This result sets future standards for the genetic testing among the Finnish type 3 VWD population.
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Armstrong E, Iriarte A, Martínez AM, Feijoo M, Vega-Pla JL, Delgado JV, Postiglioni A. Genetic diversity analysis of the Uruguayan Creole cattle breed using microsatellites and mtDNA markers. GENETICS AND MOLECULAR RESEARCH 2013; 12:1119-31. [PMID: 23661437 DOI: 10.4238/2013.april.10.7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Uruguayan Creole cattle population (N = 600) is located in a native habitat in south-east Uruguay. We analyzed its genetic diversity and compared it to other populations of American Creole cattle. A random sample of 64 animals was genotyped for a set of 17 microsatellite loci, and the D-loop hyper-variable region of mtDNA was sequenced for 28 calves of the same generation. We identified an average of 5.59 alleles per locus, with expected heterozygosities between 0.466 and 0.850 and an expected mean heterozygosity of 0.664. The polymorphic information content ranged from 0.360 to 0.820, and the global FIS index was 0.037. The D-loop analysis revealed three haplotypes (UY1, UY2 and UY3), belonging to the European matriline group, with a haplotype diversity of 0.532. The history of the population, changes in the effective population size, bottlenecks, and genetic drift are possible causes of the genetic variability patterns that we detected.
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Osiak M, Khunsin W, Armstrong E, Kennedy T, Torres CMS, Ryan KM, O'Dwyer C. Epitaxial growth of visible to infra-red transparent conducting In2O3 nanodot dispersions and reversible charge storage as a Li-ion battery anode. NANOTECHNOLOGY 2013; 24:065401. [PMID: 23340017 DOI: 10.1088/0957-4484/24/6/065401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Unique bimodal distributions of single crystal epitaxially grown In2O3 nanodots on silicon are shown to have excellent IR transparency greater than 87% at IR wavelengths up to 4 μm without sacrificing transparency in the visible region. These broadband antireflective nanodot dispersions are grown using a two-step metal deposition and oxidation by molecular beam epitaxy, and backscattered diffraction confirms a dominant (111) surface orientation. We detail the growth of a bimodal size distribution that facilitates good surface coverage (80%) while allowing a significant reduction in In2O3 refractive index. This unique dispersion offers excellent surface coverage and three-dimensional volumetric expansion compared to a thin film, and a step reduction in refractive index compared to bulk active materials or randomly porous composites, to more closely match the refractive index of an electrolyte, improving transparency. The (111) surface orientation of the nanodots, when fully ripened, allows minimum lattice mismatch strain between the In2O3 and the Si surface. This helps to circumvent potential interfacial weakening caused by volume contraction due to electrochemical reduction to lithium, or expansion during lithiation. Cycling under potentiodynamic conditions shows that the transparent anode of nanodots reversibly alloys lithium with good Coulombic efficiency, buffered by co-insertion into the silicon substrate. These properties could potentially lead to further development of similarly controlled dispersions of a range of other active materials to give transparent battery electrodes or materials capable of non-destructive in situ spectroscopic characterization during charging and discharging.
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Bredeson C, Burkart J, Sun Y, Zhu X, LeRademacher J, Rizzo J, Armstrong E, Pasquini M, Kato K. Dose, Schedule and PK Practices with IV Busulfan-Based Conditioning Regimens in a Non-Inferiority Study: Heterogenous Practices But Low VOD and TRM. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bredeson C, Burkart J, Zhu X, Sun Y, LeRademacher J, Pasquini M, Armstrong E, Rizzo J, Kato K. Chimerism Testing with Reduced Intensity Intravenous Busulfan-Based Conditioning Regimens: Once Is Enough. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Martínez M, Armstrong E, Gagliardi R, Llambí S. Estudio genealógico del perro Cimarrón Uruguayo. ARCHIVOS DE ZOOTECNIA 2011. [DOI: 10.4321/s0004-05922011000400049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Armstrong E, Peñagaricano F, Artigas R, De Soto L, Corbi C, Llambí S, Rincón G, Postiglioni A. Marcadores moleculares asociados al veteado de la carne en bovinos Criollos uruguayos. ARCHIVOS DE ZOOTECNIA 2011. [DOI: 10.4321/s0004-05922011000300058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Delgado JV, Martínez AM, Acosta A, Alvarez LA, Armstrong E, Camacho E, Cañón J, Cortés O, Dunner S, Landi V, Marques JR, Martín-Burriel I, Martínez OR, Martínez RD, Melucci L, Muñoz JE, Penedo MCT, Postiglioni A, Quiróz J, Rodellar C, Sponenberg P, Uffo O, Ulloa-Arvizu R, Vega-Pla JL, Villalobos A, Zambrano D, Zaragoza P, Gama LT, Ginja C. Genetic characterization of Latin-American Creole cattle using microsatellite markers. Anim Genet 2011; 43:2-10. [PMID: 22221019 DOI: 10.1111/j.1365-2052.2011.02207.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Genetic diversity in and relationships among 26 Creole cattle breeds from 10 American countries were assessed using 19 microsatellites. Heterozygosities, F-statistics estimates, genetic distances, multivariate analyses and assignment tests were performed. The levels of within-breed diversity detected in Creole cattle were considerable and higher than those previously reported for European breeds, but similar to those found in other Latin American breeds. Differences among breeds accounted for 8.4% of the total genetic variability. Most breeds clustered separately when the number of pre-defined populations was 21 (the most probable K value), with the exception of some closely related breeds that shared the same cluster and others that were admixed. Despite the high genetic diversity detected, significant inbreeding was also observed within some breeds, and heterozygote excess was detected in others. These results indicate that Creoles represent important reservoirs of cattle genetic diversity and that appropriate conservation measures should be implemented for these native breeds in order to minimize inbreeding and uncontrolled crossbreeding.
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Brunner A, Armstrong E. [Feedback as key element of a new culture of teaching and learning. Part 1: theoretical background]. DAS GESUNDHEITSWESEN 2010; 72:749-57; quiz 758. [PMID: 20957593 DOI: 10.1055/s-0029-1223538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Brunner A, Armstrong E. [Feedback as key element of a new culture of teaching and learning. Part II: practical guidelines and description of a teacher training]. DAS GESUNDHEITSWESEN 2010; 72:840-9; quiz 850. [PMID: 20878602 DOI: 10.1055/s-0030-1248392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Armstrong E, Leizagoyen C, Martínez A, González S, Delgado J, Postiglioni A. Genetic structure analysis of a highly inbred captive population of the African antelope Addax nasomaculatus. Conservation and management implications. Zoo Biol 2010; 30:399-411. [DOI: 10.1002/zoo.20341] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Revised: 05/20/2010] [Accepted: 07/02/2010] [Indexed: 11/09/2022]
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Martínez M, Armstrong E, Gagliardi R, Llambí S. Estudio genealógico del perro Cimarrón uruguayo. ARCHIVOS DE ZOOTECNIA 2010. [DOI: 10.21071/az.v60i232.4017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Para evaluar la variabilidad genética de la raza canina Cimarrón Uruguayo, se analizó la totalidad de la información genealógica disponible (n= 6079) utilizando el programa informático ENDOG v4.5. Los datos recabados sugieren sobrerepresen-tación de determinados reproductores y pérdida de genotipos fundacionales. La F media para la población de referencia viva apta para la reproducción fue de 0,03, la cual ha aumentado en generaciones recientes. La población ha tenido una evolución favorable en relación a crecimiento en número de individuos, aunque es muy heterogénea y requiere la aplicación de criterios en los cruzamientos que tiendan a minimizar el nivel de consanguinidad por generación.
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Abu-Sa'da OS, Armstrong E, Shen K, Cheung PY, Baker G, Yager JJ. The Effect of Caffeine on the Developing Brain. Paediatr Child Health 2010. [DOI: 10.1093/pch/15.suppl_a.15a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lassila R, Armstrong E. Current challenges of pharmacovigilance in bleeding disorders: converting the burden to benefit. Haemophilia 2009; 16:231-7. [PMID: 19758309 DOI: 10.1111/j.1365-2516.2009.02102.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
SUMMARY Safety surveillance studies have proven essential in research and development of new biological therapies for bleeding disorders as well as other diseases. Although product safety regarding HIV, hepatitis, and other blood-borne infections is currently excellent, potential new infectious agents require continued vigilant monitoring. Inhibitor development is the most common serious side effect of haemophilia replacement therapy. Several aetiological factors associated with inhibitors have been identified, but their true impact is still largely unknown. Moreover, whether plasma-derived and recombinant factor products differ in their immunogenic profiles is an unresolved issue. Coagulation factor products under development and those currently on the market require uniform, long-term surveillance. The European Haemophilia Safety Surveillance (EUHASS) project was recently established to meet these goals. The pharmaceutical industry and clinicians face common challenges complying with these requirements. In rare diseases like haemophilia, obtaining adequate patient numbers poses a challenge. Another challenge is a lack of methods for assessing disease severity, a surprising deficiency in the era of modern medical and laboratory technology. National and international registries can be used to gather required safety surveillance information. Simultaneously, clinicians benefit from well-organized registry data in their daily practice and harmonize the quality of comprehensive haemophilia care by homogeneous follow-up platforms. Experience with such registries comes, for example, from Europe (PEDNET), the USA (CDC/UDC), the UK (UKHCDO), and Sweden (Malmö). It is important to commit to future pharmacovigilance efforts, aiming at high-quality safety surveillance programmes at both the pharmaceutical research community and clinical levels.
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Armstrong E, Stubbs C, Bailey E, D'Souza D, Gaze M, Hoskln P, Marsh D, Polhill S, Sullivan K. A NOVEL METHOD OF IMMOBILISATION FOR PAEDIATRIC PELVIC BRACHYTHERAPY PATIENTS. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)72822-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Amigues EJ, Armstrong E, Dvorakova M, Migaud ME, Huang M. beta-1,2,3-Triazolyl-nucleosides as nicotinamide riboside mimics. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2009; 28:238-59. [PMID: 19333861 DOI: 10.1080/15257770902865415] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The synthesis of a series of pyridine- and piperidine-substituted 1,2,3-triazolides linked to a riboside moiety is described. The presence of a triazolide substituent on the pyridine moiety permitted the facile reduction of the latter under mild hydrogenation conditions. These analogues were modelled as to define their similarity to nicotinamide riboside and quantify their ability to bind NAD-dependent protein deacetylases.
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Alvarez JA, Armstrong E, Gómez M, Soto M. Anaerobic treatment of low-strength municipal wastewater by a two-stage pilot plant under psychrophilic conditions. BIORESOURCE TECHNOLOGY 2008; 99:7051-7062. [PMID: 18282704 DOI: 10.1016/j.biortech.2008.01.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2007] [Revised: 01/03/2008] [Accepted: 01/04/2008] [Indexed: 05/25/2023]
Abstract
A two-stage anaerobic treatment pilot plant was tested for the treatment of raw domestic wastewater under temperatures ranging from 21 to 14 degrees C. The plant consisted of a hydrolytic upflow sludge bed (HUSB) digester (25.5m3) followed by an upflow anaerobic sludge blanket (UASB) digester (20.36m3). The hydraulic retention time (HRT) varied from 5.7 to 2.8h for the first stage (HUSB digester) and from 13.9 to 6.5h for the second stage (UASB digester). Total suspended solids (TSS), total chemical oxygen demand (TCOD), and biochemical oxygen demand (BOD) removals ranged from 76% to 89%, from 49% to 65%, and from 50% to 77%, respectively, for the overall system. The percentage of influent COD converted to methane was 36.1%, the hydrolysis of influent volatile suspended solids (VSS) reached 59.7% and excess biomass was 21.6% of the incoming VSS. Plant performance was influenced by the wastewater concentration and temperature, yet better results were obtained for influent COD higher than 250mg/l.
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Nyflot M, Grudzinski J, Titz B, Armstrong E, Wheeler D, Harari P, Jeraj R. TH-C-351-04: 18F-FLT PET Imaging of Proliferative Response to An EGFR Inhibitor in HNSCC Xenograft Mouse Models. Med Phys 2008. [DOI: 10.1118/1.2962860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jalanko H, Peltonen S, Koskinen A, Puntila J, Isoniemi H, Holmberg C, Pinomäki A, Armstrong E, Koivusalo A, Tukiainen E, Mäkisalo H, Saland J, Remuzzi G, de Cordoba S, Lassila R, Meri S, Jokiranta TS. Successful liver-kidney transplantation in two children with aHUS caused by a mutation in complement factor H. Am J Transplant 2008; 8:216-21. [PMID: 17973958 DOI: 10.1111/j.1600-6143.2007.02029.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A 12-month-old boy and his 16-year-old aunt became acutely ill 6 months apart and were diagnosed to have atypical hemolytic uremic syndrome (aHUS). Genetic analysis revealed heterozygous R1215Q mutation in complement factor H (CFH) in both patients. The same mutation was found in five healthy adult relatives indicating incomplete penetrance of the disease. The patients developed terminal renal failure and experienced reversible neurological symptoms in spite of plasma exchange (PE) therapy. In both cases, liver-kidney transplantation was successfully performed 6 months after the onset of the disease. To minimize complement activation and prevent thrombotic microangiopathy or overt thrombotic events due to the malfunctioning CFH, extensive PE with fresh frozen plasma was performed pre- and perioperatively and anticoagulation was started a few hours after the operation. No circulatory complications appeared and all four grafts started to function immediately. Also, no recurrence or other major clinical setbacks have appeared during the postoperative follow-up (15 and 9 months) and the grafts show excellent function. While more experience is needed, it seems that liver-kidney transplantation combined with pre- and perioperative PE is a rational option in the management of patients with aHUS caused by CFH mutation.
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Szántó T, Salmela B, Mäkipernaa A, Armstrong E, Lassila R. Management of acute myocardial infarction in a patient with factor XIII deficiency using prophylactic factor replacement therapy. Haemophilia 2007; 14:163-5. [PMID: 17961171 DOI: 10.1111/j.1365-2516.2007.01559.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Armstrong E. Taking the lead against Reed Elsevier. J R Soc Med 2007. [DOI: 10.1258/jrsm.100.6.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Gayadeen S, Armstrong E, Solano J, Souza D, Sullivan T, Payne H. Urinary Toxicity after Treatment of High Risk Prostate Cancer using HDR Brachytherapy Boost. Clin Oncol (R Coll Radiol) 2007. [DOI: 10.1016/j.clon.2007.01.358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Allen G, Saba C, Armstrong E, Huang S, Ludwig D, Hicklin D, Harari P. 2613. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.1027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Allen G, Modhia F, Armstrong E, Huang S, Harari P. Insulin-Like Growth Factor-1 Receptor Signaling Blockade Modulates Cellular Proliferation, Angiogenesis, Xenograft Growth and Radiation-Induced Apoptosis. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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