1. Department of Ophthalmology, The Second Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
2. North Sichuan Medical College, Nanchong, Sichuan, China
3. Department of Ophthalmology, Affiliate Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
4. Department of Ophthalmology, Army Medical Center of PLA (Daping Hospital), Chongqing, China