[Zhang, Zhengdong; Li, Yao; Liu, Pan] Chengdu Med Coll, Sch Clin Med, Chengdu, Peoples R China.
[Zhang, Zhengdong; Li, Yao; Liu, Pan] Chengdu Med Coll, Affiliated Hosp 1, Chengdu, Peoples R China.
[Tu, Ji] Univ New South Wales, St George & Sutherland Clin Sch, Spine Labs, Sydney, NSW, Australia.
[Wang, Wenzhao] Sichuan Univ, Dept Orthped, West China Hosp, Chengdu, Peoples R China.
[Li, Zheng] Peoples Hosp Jiulongpo Dist, Chongqing, Peoples R China.