[1] Guangxi Univ Chinese Med, Dept Orthoped, Ruikang Hosp Affiliated, Nanning 530011, Peoples R China
[2] Nanjing Univ, Sch Med, Jinling Hosp, Dept Orthoped, Nanjing 210002, Jiangsu, Peoples R China
[3] Soochow Univ, Dept Orthoped, Affiliated Hosp 3, Peoples Hosp Changzhou 1, Changzhou 213003, Jiangsu, Peoples R China