[1] Jinan City Peoples Hosp, Dept Spine & Joint Surg, Jinan, Peoples R China
[2] Jinan City Peoples Hosp, Dept Personnel Sect, Jinan, Peoples R China
[3] Dongchangfu Dist Hosp Tradit Chinese Med, Dept Orthopaed Hand & Foot Surg, Liaocheng, Peoples R China
[4] Zibo Cent Hosp, Dept Orthoped Joint Surg, 54 Gongqingtuan West Rd, Zibo, Peoples R China