1. From the Eye Institute, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, China; the
2. Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, Jiangsu Province, China; the
3. Funing County Center for Disease Prevention and Control, Yancheng, Jiangsu Province, China; and the
4. Changshu N.2 People's Hospital, Changshu, Jiangsu Province, China.