1 School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
2 School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. pfang@mails.tjmu.edu.cn.
3 School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. ruimin0801@163.com.