1. Clinical Medicine School, Ningxia Medical University, Yinchuan, China
2. Department of Cardiology, Gansu Provincial Hospital, Lanzhou, China
3. Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Nankai District, Tianjin, China
4. Department of Cardiology, Shanxi Cardiovascular Hospital (affiliated with Shanxi Medical University), Taiyuan, China