1 Department of Social Medicine and Health Management, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
2 Bao'an Central Hospital of Shenzhen, Shenzhen, Guangdong, China.
3 Department of Management, School of Economics and Management, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China.
4 Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
5 Department of Neurosurgery, Shenzhen Second People's Hospital, Shenzhen University, Shenzhen, Guangdong, China. lyyy_wzh@163.com.
6 Department of Social Medicine and Health Management, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China. zuxunlu@yahoo.com.