[Xie, Biao; Zhou, Jianda; Chen, Jia] Cent S Univ, Xiangya Hosp 3, Dept Plast Surg, Changsha 410013, Hunan, Peoples R China.
[Xie, Biao] Hunan Univ Chinese Med, Affiliated Hosp 2, Dept Colorectal Surg, Changsha 410005, Hunan, Peoples R China.
[Cao, Ke] Cent S Univ, Xiangya Hosp 3, Dept Oncol, Changsha 410013, Hunan, Peoples R China.
[Tang, Jintian] Tsinghua Univ, Inst Med Phys & Engn, Dept Engn Phys, Beijing 100084, Peoples R China.
[Chen, Xiang] Cent S Univ, Xiangya Hosp, Dept Dermatol, Changsha 410008, Hunan, Peoples R China.