Published on in Vol 20, No 12 (2018): December
1 Faculty of Medicine, Department of Ophthalmology, Khon Kaen University, Khon Kaen, Thailand
2 Massachusetts General Hospital, Department of Medicine, Harvard University, Boston, MA, United States
3 Ophthalmic Consultants of Boston, Department of Ophthalmology, Harvard University, Boston, MA, United States
4 Data Management and Statistical Analysis Center, Faculty of Public Health, Khon Kaen University, Khon Kaen, Thailand
5 Harvard Medical School, Bostonn, MA, United States
6 Harvard School of Public Health, Boston, MA, United States