[1] Southeast Univ, Ophthalmol, Nanjing Tongren Hosp, Nanjing 211102, Jiangsu, Peoples R China
[2] Third Peoples Hosp Gansu Prov, Dept Endocrinol, Lanzhou 730000, Peoples R China
[3] Gansu Prov Hosp Tradit Chinese Med, Publ Dept, Lanzhou 730050, Gansu, Peoples R China
[4] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing Gansu Prov, Lanzhou 730000, Peoples R China
[5] Zhuanglang Cty Peoples Hosp, Ophthalmol, Pingliang 744600, Gansu, Peoples R China