[1] Lanzhou Univ, Evidence Based Social Sci Res Ctr, Sch Publ Hlth, Lanzhou, Peoples R China
[2] Shandong Univ, Cheeloo Coll Med, Sch Publ Hlth, Dept Epidemiol, Jinan, Peoples R China
[3] Lanzhou Univ, Sch Clin Med 1, Lanzhou, Peoples R China
[4] Lanzhou Univ, Sch Clin Med 2, Lanzhou, Peoples R China
[5] Lanzhou Univ, Sch Publ Hlth, Dept Social Med & Hlth Management, Lanzhou, Peoples R China
[6] Lanzhou Univ, Phys Examinat Ctr 2, Hosp 1, Lanzhou, Peoples R China
[7] Key Lab Evidence Based Med & Knowledge Translat Ga, Lanzhou, Peoples R China