[Tang, Xiaojun] Univ South China, Affiliated Hosp 2, Hengyang Med Sch, Dept Spinal Surg, Hengyang, Hunan, Peoples R China.
[Xu, Xinshu; Chen, Ruobing; Zhang, Shuangxi; Zhang, Mengmeng] Henan Univ Chinese Med, Dept Anorectal Surg, Affiliated Hosp 1, Zhengzhou, Henan, Peoples R China.
[Xu, Xinshu; Chen, Ruobing; Zhang, Mengmeng] Henan Univ Chinese Med, Clin Med Coll 1, Zhengzhou, Henan, Peoples R China.
[Mei, Zubing; Mei, ZB] Shanghai Univ Tradit Chinese Med, Shuguang Hosp, Dept Anorectal Surg, Shanghai, Peoples R China.
[Mei, Zubing; Mei, ZB] Shuguang Hosp, Anorectal Dis Inst, Shanghai, Peoples R China.