1. Faculty of Medicine, Padjadjaran University, Bandung, Indonesia
2. Faculty of Medicine, Syiah Kuala University, Banda Aceh, Indonesia
3. Department of Medicine, Zainoel Abidin Hospital, Banda Aceh, Indonesia
4. Department of Ophthalmology, Cicendo Eye Hospital, Bandung, Indonesia
5. Faculty of Medicine, Indonesia University, Jakarta, Indonesia
6. Department of Ophthalmology, Cipto Mangunkusumo Hospital, Jakarta, Indonesia