1. Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, Guangdong, China
2. Shantou University Medical College, Shantou, Guangdong, China
3. Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong
4. Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China