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Chen J, Adhikari RK, Wu LSF, Khatry SK, Christian P, LeClerq SC, Katz J, West KP. Early childhood height is a determinant of young adult stature in rural Nepal. BMC Public Health 2024; 24:2046. [PMID: 39080560 PMCID: PMC11289932 DOI: 10.1186/s12889-024-19469-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 07/12/2024] [Indexed: 08/02/2024] Open
Abstract
BACKGROUND Does preschool height predict adult stature in undernourished settings? The extent to which preschool length or height forecasts young adult stature is unclear in chronically undernourished populations. METHODS In 2006-8, we assessed height in a cohort of 2074 young adults, aged 16-23 years, in rural Nepal who, as preschoolers (≤ 4 year), were measured at baseline and again 16 months later during a vitamin A supplementation trial in 1989-91. We assessed by linear regression the ability of preschool length (L, measured < 24 mo) or height (Ht, 24-59 mo), at each year of age to predict 16-23 year old height, adjusted for month of young adult age, interval duration (in months), caste, preschool weight-for-height z-score and, in young women, time since menarche, marriage status and pregnancy history. RESULTS Young women were a mean of 0.81, 1.11, 0.82, 0.24, 0.44 cm taller (all p < 0.01) and young men, 0.84, 1.18, 0.74, 0.64 and 0.48 cm taller (all p < 0.001) per cm of attained L/Ht at each successive preschool year of age and, overall, were 2.04 and 2.40 cm taller for each unit increase in preschool L/Ht z-score (L/HAZ) (both p < 0.001). Coefficients were generally larger for 16-month follow-up measurements. The percent of young adult height attained by children with normal L/HAZ (>-1) increased from 38-40% mid-infancy to ∼ 69-74% by 6 years of age. By 3-6 years of age heights of stunted children (L/HAZ<-2) were consistently ∼ 4-7% lower in their young adult height versus normal statured children. There was no effect of preschool vitamin A receipt. CONCLUSIONS Shorter young children become shorter adults but predictive effects can vary by sex, age assessed, and may be influenced by year or season of measurement.
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Affiliation(s)
- Jiaxin Chen
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | | | - Lee S-F Wu
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Subarna K Khatry
- Nepal Nutrition Intervention Project - Sarlahi (NNIPS), Kathmandu, Nepal
| | - Parul Christian
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Nepal Nutrition Intervention Project - Sarlahi (NNIPS), Kathmandu, Nepal
| | - Steven C LeClerq
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Nepal Nutrition Intervention Project - Sarlahi (NNIPS), Kathmandu, Nepal
| | - Joanne Katz
- Nepal Nutrition Intervention Project - Sarlahi (NNIPS), Kathmandu, Nepal
- Global Disease Epidemiology and Control Program, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Keith P West
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
- Nepal Nutrition Intervention Project - Sarlahi (NNIPS), Kathmandu, Nepal.
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Almusawi H. Factors Affecting the Writing Performance in Hearing and Deaf Children: An Insight into Regularities and Irregularities of the Arabic Orthographic System. LANGUAGE AND SPEECH 2023; 66:246-264. [PMID: 35652441 DOI: 10.1177/00238309221097714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study aims to account for the underlying causes of spelling errors in hearing and deaf children who speak a dialectal form of Arabic that substantially differs from the standard written one. It presents a general overview of the spoken Arabic language and its written system, drawing attention to some of the phonological and orthographic regularities and irregularities used in constructing and decoding Arabic words and sentences. It also accounts for the diglossic factors that interfere with the process of phoneme-to-grapheme mapping. The spelling outcomes of a group of hearing children are compared with another group of orally educated deaf children, who in addition to the complexity and diglossity of Arabic, have limited hearing abilities. Both groups performed two written tasks, one representing the standard form and the other representing the dialect. These tasks identified the types of spelling and segmentation errors and the effects of the committed errors on children's awareness of the concept of word and word boundaries. Analysis of the results reveals their spelling errors' nature and frequencies, and progressively categorizes the most prominent errors in practicing each language form. The deaf group (n = 30) produced significantly more errors than the hearing group (n = 36) in the dysphonetic errors and the word omission categories. The findings indicate that the sociolinguistic context of the Arabic language and the orthographic nature of the Arabic script are both important factors affecting hearing and deaf children's awareness of the concept of word as well as their spelling performance. These results may enable educators to understand the underlying factors of Arabic spelling and produce targeted error correction strategies to maximize children's learning outcomes.
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Affiliation(s)
- Hashemiah Almusawi
- Department of Special Education, College of Basic Education, The Public Authority for Applied Education and Training, Kuwait
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Ficenec SC, Grant DS, Sumah I, Alhasan F, Yillah MS, Brima J, Konuwa E, Gbakie MA, Kamara FK, Bond NG, Engel EJ, Shaffer JG, Fischer WA, Wohl DA, Emmett SD, Schieffelin JS. The prevalence of Post-Ebola Syndrome hearing loss, Sierra Leone. BMC Infect Dis 2022; 22:624. [PMID: 35850699 PMCID: PMC9290210 DOI: 10.1186/s12879-022-07604-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 07/01/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Globally, hearing loss is the second leading cause of disability, affecting approximately 18.7% of the world's population. However, the burden of hearing loss is unequally distributed, with the majority of affected individuals located in Asia or Sub-Saharan Africa. Following the 2014 West African Ebola Outbreak, disease survivors began to describe hearing loss as part of the constellation of symptoms known as Post-Ebola Syndrome. The goal of this study was to more fully characterize hearing loss among Ebola Virus Disease (EVD) survivors. METHODOLOGY AND PRINCIPAL FINDINGS EVD survivors and their household contacts were recruited (n = 1,12) from Eastern Sierra Leone. Each individual completed a symptom questionnaire, physical exam, and a two-step audiometry process measuring both air and bone conduction thresholds. In comparison to contacts, EVD survivors were more likely to have complaints or abnormal findings affecting every organ system. A significantly greater percentage of EVD survivors were found to have hearing loss in comparison to contacts (23% vs. 9%, p < 0.001). Additionally, survivors were more likely to have bilateral hearing loss of a mixed etiology. Logistic regression revealed that the presence of any symptoms of middle or inner ear (p < 0.001), eye (p = 0.005), psychiatric (p = 0.019), and nervous system (p = 0.037) increased the odds of developing hearing loss. CONCLUSIONS AND SIGNIFICANCE This study is the first to use an objective and standardized measurement to report hearing loss among EVD survivors in a clinically meaningful manner. In this study it was found that greater than 1/5th of EVD survivors develop hearing loss. The association between hearing impairment and symptoms affecting the eye and nervous system may indicate a similar mechanism of pathogenesis, which should be investigated further. Due to the quality of life and socioeconomic detriments associated with untreated hearing loss, a greater emphasis must be placed on understanding and mitigating hearing loss following survival to aid in economic recovery following infectious disease epidemics.
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Affiliation(s)
- Samuel C Ficenec
- Department of Internal Medicine, Tulane University School of Medicine, New Orleans, LA, USA.
| | - Donald S Grant
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
- College of Medicine and Allied Health Sciences, University of Sierra Leone, Freetown, Sierra Leone
| | - Ibrahim Sumah
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Foday Alhasan
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Mohamed S Yillah
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Jenneh Brima
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Edwin Konuwa
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Michael A Gbakie
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Fatima K Kamara
- Kenema Government Hospital, Ministry of Health and Sanitation, Kenema, Sierra Leone
| | - Nell G Bond
- Department of Immunology and Microbiology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Emily J Engel
- Department of Pediatrics, Section of Infectious Diseases, Tulane University School of Medicine, New Orleans, LA, USA
| | - Jeffrey G Shaffer
- Department of Biostatistics and Data Science, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, USA
| | - William A Fischer
- Department of Internal Medicine, Division of Pulmonary Diseases and Critical Care Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - David A Wohl
- Department of Internal Medicine, Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Susan D Emmett
- Department of Epidemiology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Otolaryngology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - John S Schieffelin
- Department of Pediatrics, Section of Infectious Diseases, Tulane University School of Medicine, New Orleans, LA, USA
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Heinrichs-Graham E, Walker EA, Taylor BK, Menting SC, Eastman JA, Frenzel MR, McCreery RW. Auditory experience modulates frontoparietal theta activity serving fluid intelligence. Brain Commun 2022; 4:fcac093. [PMID: 35480224 PMCID: PMC9039508 DOI: 10.1093/braincomms/fcac093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 02/15/2022] [Accepted: 04/01/2022] [Indexed: 12/04/2022] Open
Abstract
Children who are hard of hearing are at risk for developmental language and academic delays compared with children with normal hearing. Some work suggests that high-order cognitive function, including fluid intelligence, may relate to language and academic outcomes in children with hearing loss, but findings in these studies have been mixed and to date, there have been no studies of the whole-brain neural dynamics serving fluid intelligence in the context of hearing loss. To this end, this study sought to identify the impact of hearing loss and subsequent hearing aid use on the neural dynamics serving abstract reasoning in children who are hard of hearing relative to children with normal hearing using magnetoencephalography. We found significant elevations in occipital and parietal theta activity during early stimulus evaluation in children who are hard of hearing relative to normal-hearing peers. In addition, we found that greater hearing aid use was significantly related to reduced activity throughout the fronto-parietal network. Notably, there were no differences in alpha dynamics between groups during later-stage processing nor did alpha activity correlate with hearing aid use. These cross-sectional data suggest that differences in auditory experience lead to widespread alterations in the neural dynamics serving initial stimulus processing in fluid intelligence in children.
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Affiliation(s)
- Elizabeth Heinrichs-Graham
- Institute for Human Neuroscience, Boys Town National Research Hospital (BTNRH), Omaha, NE, USA
- College of Medicine, Creighton University, Omaha, NE, USA
- Center for Magnetoencephalography (MEG), University of Nebraska Medical Center (UNMC), Omaha, NE, USA
| | - Elizabeth A. Walker
- Wendell Johnson Speech and Hearing Center, Department of Communication Sciences and Disorders, University of Iowa, Iowa City, IA, USA
| | - Brittany K. Taylor
- Institute for Human Neuroscience, Boys Town National Research Hospital (BTNRH), Omaha, NE, USA
- College of Medicine, Creighton University, Omaha, NE, USA
- Center for Magnetoencephalography (MEG), University of Nebraska Medical Center (UNMC), Omaha, NE, USA
| | - Sophia C. Menting
- Center for Magnetoencephalography (MEG), University of Nebraska Medical Center (UNMC), Omaha, NE, USA
- Department of Psychology, University of Nebraska—Lincoln, Lincoln, NE, USA
| | - Jacob A. Eastman
- Institute for Human Neuroscience, Boys Town National Research Hospital (BTNRH), Omaha, NE, USA
- Center for Magnetoencephalography (MEG), University of Nebraska Medical Center (UNMC), Omaha, NE, USA
| | - Michaela R. Frenzel
- Institute for Human Neuroscience, Boys Town National Research Hospital (BTNRH), Omaha, NE, USA
- Center for Magnetoencephalography (MEG), University of Nebraska Medical Center (UNMC), Omaha, NE, USA
| | - Ryan W. McCreery
- Audibility, Perception, and Cognition Laboratory, BTNRH, Omaha, NE, USA
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Ficenec SC, Percak J, Arguello S, Bays A, Goba A, Gbakie M, Shaffer JG, Emmett SD, Schieffelin JS, Bausch D. Lassa Fever Induced Hearing Loss: The Neglected Disability of Hemorrhagic Fever. Int J Infect Dis 2020; 100:82-87. [PMID: 32795603 PMCID: PMC7807889 DOI: 10.1016/j.ijid.2020.08.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/27/2020] [Accepted: 08/07/2020] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE Lassa fever (LF) a hemorrhagic fever endemic to Western has an incidence of approximately 500,000 cases per year. Here, we evaluate hearing loss and other sequelae following LF. METHODS This case-control study enrolled laboratory confirmed LF survivors, non-LF Febrile controls and Matched Community controls with no history of LF or recent hospitalization for a febrile illness. Study participants completed a symptom questionnaire. Pure-tone audiometry was completed by a subset of participants. RESULTS One hundred forty-seven subjects were enrolled aged from 3-66 years (mean = 23.3). LF survivors were significantly more likely to report balance difficulties (55% vs 20%, p < 0.001), hair loss (32% vs 7%, p < 0.001), difficulty speaking (19% vs 1%, p < 0.001), social isolation (50% vs 0%, p < 0.001), and hearing loss (17% vs 1%, p = 0.002) in comparison to Matched-Community Controls. Similar trends were noted in comparison to Febrile Controls, although these findings were non-significant. Fifty subjects completed audiometry. Audiometry found that LF survivors had significantly more bilateral hearing loss in comparison to Matched-Community Controls (30% vs 4%, p = 0.029). CONCLUSION This study characterizes the sequelae of LF and highlights the need for increased access to hearing care in West Africa.
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Affiliation(s)
| | - Jeffrey Percak
- Tulane University School of Medicine, New Orleans, LA, USA
| | - Sara Arguello
- Tulane University School of Medicine, New Orleans, LA, USA
| | - Alison Bays
- Division of Rheumatology, Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | | | | | - Jeffrey G Shaffer
- Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, USA
| | - Susan D Emmett
- Department of Head and Neck Surgery and Communication Sciences, Duke University School of Medicine, Durham, NC, USA; Duke Global Health Institute, Durham, NC, USA; Center for Health Policy and Inequalities Research, Duke University, Durham, NC, USA
| | | | - Daniel Bausch
- Tulane Viral Hemorrhagic Fever Research Program, Kenema Government Hospital, Kenema, Sierra Leone
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Emmett SD, Schmitz J, Karna SL, Khatry SK, Wu L, LeClerq SC, Pillion J, West KP. Early childhood undernutrition increases risk of hearing loss in young adulthood in rural Nepal. Am J Clin Nutr 2018; 107:268-277. [PMID: 29425280 PMCID: PMC6669330 DOI: 10.1093/ajcn/nqx022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 11/07/2017] [Indexed: 12/04/2022] Open
Abstract
Background Prevalence of young adult hearing loss is high in low-resource societies; the reasons for this are likely complex but could involve early childhood undernutrition. Objective We evaluated preschool childhood stunting, wasting, and underweight as risk factors for hearing loss in young adulthood in Sarlahi District, southern Nepal. Design Ear health was assessed in 2006-2008 in a cohort of 2193 subjects aged 16-23 y, who as children <60 mo of age participated in a 16-mo placebo-controlled, randomized vitamin A supplementation trial from 1989 to 1991. At each of five 4-mo assessments, field staff measured children's weight, height, and mid-upper arm circumference (MUAC) and recorded validated parental history of ear discharge in the previous 7 d. Children were classified as stunted [<-2 z score height-for-age (HAZ)], underweight [<-2 z score weight-for-age (WAZ)], or wasted [<-2 z score MUAC-for-age (MUACAZ) or body mass index-for-age (BMIAZ)]. At follow-up, hearing was tested by audiometry and tympanometry, with hearing loss defined as pure-tone average >30dB in the worse ear (0.5, 1, 2, 4 kHz) and middle-ear dysfunction as abnormal tympanometric peak height (<0.3 or >1.4 mmho) or width (<50 or >110 daPa). Results Hearing loss, present in 5.9% (95% CI: 5.01%, 7.00%) of subjects, was associated with early childhood stunting (OR: 1.64; 95% CI: 1.10, 1.45), underweight (OR: 1.70; 95% CI: 1.18, 2.44) and wasting by BMIAZ (OR: 1.88; 95% CI: 1.19, 2.97) and MUACAZ (OR: 2.14; 95% CI: 1.47, 3.12). Abnormal tympanometry, affecting 16.6% (95% CI: 15.06%, 18.18%), was associated with underweight (OR: 1.46; 95% CI: 1.16, 1.84) and wasting by BMIAZ (OR: 1.80; 95% CI: 1.32, 2.46) and MUACAZ (OR: 1.42; 95% CI: 1.10, 1.84), but not stunting (OR: 1.18; 95% CI: 0.93, 1.49) in early childhood. Highest ORs were observed for subjects with both hearing loss and abnormal tympanometry, ranging from 1.87 to 2.24 (all lower 95% CI >1.00). Conclusions Early childhood undernutrition is a modifiable risk factor for early adulthood hearing loss.
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Affiliation(s)
- Susan D Emmett
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD,Division of Head & Neck Surgery and Communication Sciences, Duke University School of Medicine, Durham, NC,Duke Global Health Institute, Durham, NC,Address correspondence to SDE (e-mail: )
| | - Jane Schmitz
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Sureswor L Karna
- Speech and Hearing Unit, Ganesh Man Singh Memorial ENT Centre, Tribhuvan University Institute of Medicine, Kathmandu, Nepal
| | - Subarna K Khatry
- Nepal Nutrition Intervention Project-Sarlahi (NNIPS), Kathmandu, Nepal
| | - Lee Wu
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Steven C LeClerq
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD,Nepal Nutrition Intervention Project-Sarlahi (NNIPS), Kathmandu, Nepal
| | - Joseph Pillion
- Department of Audiology, Kennedy Krieger Institute, Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Keith P West
- Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
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Undurraga EA, Behrman JR, Emmett SD, Kidd C, Leonard WR, Piantadosi ST, Reyes-García V, Sharma A, Zhang R, Godoy RA. Child stunting is associated with weaker human capital among native Amazonians. Am J Hum Biol 2017; 30. [PMID: 28901592 DOI: 10.1002/ajhb.23059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 06/19/2017] [Accepted: 08/24/2017] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES We assessed associations between child stunting, recovery, and faltering with schooling and human capital skills in a native Amazonian society of horticulturalists-foragers (Tsimane'). METHODS We used cross-sectional data (2008) from 1262 children aged 6 to 16 years in 53 villages to assess contemporaneous associations between three height categories: stunted (height-for-age Z score, HAZ<-2), moderately stunted (-2 ≤ HAZ≤-1), and nonstunted (HAZ>-1), and three categories of human capital: completed grades of schooling, test-based academic skills (math, reading, writing), and local plant knowledge. We used annual longitudinal data (2002-2010) from all children (n = 853) in 13 villages to estimate the association between changes in height categories between the first and last years of measure and schooling and academic skills. RESULTS Stunting was associated with 0.4 fewer completed grades of schooling (∼24% less) and with 13-15% lower probability of showing any writing or math skills. Moderate stunting was associated with ∼20% lower scores in local plant knowledge and 9% lower probability of showing writing skills, but was not associated with schooling or math and writing skills. Compared with nonstunted children, children who became stunted had 18-21% and 15-21% lower probabilities of showing math and writing skills, and stunted children had 0.4 fewer completed grades of schooling. Stunted children who recovered showed human capital outcomes that were indistinguishable from nonstunted children. CONCLUSIONS The results confirm adverse associations between child stunting and human capital skills. Predictors of growth recovery and faltering can affect human capital outcomes, even in a remote, economically self-sufficient society.
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Affiliation(s)
- Eduardo A Undurraga
- School of Government, Pontificia Universidad Católica de Chile, Santiago, Región Metropolitana 7820436, Chile
| | - Jere R Behrman
- Department of Economics and Population Studies Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Susan D Emmett
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287.,Center for Human Nutrition, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
| | - Celeste Kidd
- Department of Brain and Cognitive Sciences, University of Rochester, Rochester, New York 14627-0268
| | - William R Leonard
- Department of Anthropology, Northwestern University, Evanston, Illinois 60208
| | - Steven T Piantadosi
- Department of Brain and Cognitive Sciences, University of Rochester, Rochester, New York 14627-0268
| | - Victoria Reyes-García
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Spain.,Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain
| | - Abhishek Sharma
- Royal Brisbane and Women's Hospital, Brisbane, Queensland 4029, Australia
| | - Rebecca Zhang
- Graduate School of Business, Stanford University, Stanford, California 94305
| | - Ricardo A Godoy
- Heller School for Social Policy and Management, Brandeis University, Waltham, Massachusetts 02453
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