1. Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
2. Eye Institute, The Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
3. Department of Party Committee Personnel Work, The Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
4. Center for Disease Prevention and Control of Nantong City, Nantong, Jiangsu, China