[Zhou, Liang] Hunan Univ Chinese Med, Hosp 1, Dept Breast Surg, Changsha, Peoples R China.^[Liang, Lixin] Hunan Univ Chinese Med, Hosp 1, Dept Hlth Management, Changsha, Peoples R China.^[Zeng, Zhijun] Cent South Univ, Xiangya Hosp, Dept Gerat Surg, Changsha, Peoples R China.^[Gong, Houwu] DHC SOFTWARE CO LTD, DHC Mediway Technol Co Ltd, Beijing, Peoples R China.