[Xiong, Yifan; Liu, Jun-an] Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Publ Hlth, Dept Social Med & Hlth Management, Wuhan, Peoples R China.
[Zhao, Ying] Univ South China, Sch Publ Hlth, Hengyang Med Sch, Dept Social Med, Hengyang, Peoples R China.
[Zhang, Tianyu] Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Basic Med, Wuhan, Peoples R China.
[Wang, Qi] Huazhong Univ Sci & Technol, Tongji Med Coll, Sch Publ Hlth, Dept Epidemiol & Biostat, Wuhan, Peoples R China.