1 Yong Loo Lin School of Medicine (YLLSoM), National University of Singapore (NUS).
2 Singapore Eye Research Institute (SERI), Singapore National Eye Centre (SNEC).
3 Duke-NUS Medical School, Singapore.
4 The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.
5 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
6 Department of Medicine (DIMED), Geriatrics Division, University of Padova, Italy.
7 Universidade da Coruña, Gerontology Research Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), SERGAS, A Coruña, Spain.
8 Graduate Program in Biomedical Gerontology, School of Medicine, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.
9 Institute of Geriatrics and Gerontology, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil.
10 Department of Public Health Science, Karolinska Institute, Sweden.
11 Division of Rehabilitation Sciences, School of Health Professions, University of Texas Medical Branch, Galveston.
12 Division of Geriatrics, Department of Internal Medicine, University of Texas Medical Branch, Galveston.
13 Muribushi Okinawa Center for Teaching Hospitals, Urasoe City, Japan.