1. The Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
2. The Department of Ophthalmology, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong Province, China
3. Department of Spine Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong Province, China
4. The Department of Ophthalmology, The Sixth Affiliated Hospital of Sun Yat sen University, Guangzhou, Guangdong Province, China