[1] Shenzhen Qianhai Shekou Free Trade Zone Hosp, Ctr Clin Epidemiol & Evidence Based Med, Gongye 7th Rd, Shenzhen 518000, Guangdong, Peoples R China
[2] Shantou Univ, Sch Publ Hlth, Shantou 515063, Guangdong, Peoples R China
[3] Zhengzhou Univ, Affiliated Hosp 2, Dept Resp & Crit Care Med, Zhengzhou 450000, Henan, Peoples R China
[4] Shenzhen Qianhai Shekou Free Trade Zone Hosp, Dept Neurol, Shenzhen 518000, Guangdong, Peoples R China
[5] Shenzhen Qianhai Shekou Free Trade Zone Hosp, Dept Urol, Shenzhen 518000, Guangdong, Peoples R China
[6] Shenzhen Qianhai Shekou Free Trade Zone Hosp, Dept Cardiovasc Med, Shenzhen 518000, Guangdong, Peoples R China
[7] Shenzhen Univ, Sch Publ Hlth, Dept Biostat & Epidemiol, Med Sch, Shenzhen 518000, Guangdong, Peoples R China