1. Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Science Key Lab, Capital Medical University, Beijing, China
2. Department of Glaucoma, Hebei Eye Hospital, Xingtai, Hebei, China
3. Department of ophthalmology, 1st Hospital of Shijiazhuang, Shijiazhuang, China
4. Department of Ophthalmology, Handan 3rd Hospital, Handan, Hebei, China
5. Department of Glaucoma, Fushun Eye Hospital, Fushun, China
6. Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China