1. Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China
2. School of Medicine, Nankai University, Tianjin, China
3. Medical School, Chinese PLA, Beijing, China
4. Department of Ophthalmology, The 74th Army Group Hospital, Guangzhou, China
5. Department of Ophthalmology, Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China