1. Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan China
2. Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College Huazhong University of Science and Technology Wuhan China
3. Computer Center, Tongji Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan China