Published on in Vol 19, No 12 (2017): December
1 Department of Ophthalmology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
2 Department of Medicine, Massachusetts General Hospital, Boston, MA, United States
3 Department of Dermatology, Harvard Medical School, Boston, MA, United States
4 Ophthalmic Consultants of Boston, Department of Ophthalmology, Harvard Medical School, Boston, MA, United States
5 Data Management and Statistical Analysis Center, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
6 Harvard School of Public Health, Boston, MA, United States