1. School of Public Health, Shanghai Jiaotong University School of Medicine, Shanghai, China
2. Centers for Disease Control and Prevention, Pudong New Area, Shanghai, China
3. Shanghai Jing’an District Jiangning Road Community Health Service Centre, Shanghai 200041, China
4. Department of Health Management Center, Zhongshan Hospital, Shanghai Medical College of Fudan University, Shanghai, China
5. Department of General Practice, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China