[Tao, Yiming] Cent South Univ, Xiangya Hosp, Dept Gen Surg, Changsha 410008, Hunan, Peoples R China.
[Tao, Yiming] Cent South Univ, Xiangya Hosp, Natl Clin Res Ctr Geriatr Disorders, Changsha 410008, Hunan, Peoples R China.
[Tian, Xuefei] Hunan Univ Chinese Med, Coll Integrated Chinese & Western Med, Dept Internal Med, Changsha 410208, Hunan, Peoples R China.
[Luo, Jia] Cent South Univ, Hunan Canc Hosp, Affiliated Tumor Hosp, Dept Surg, Changsha 410013, Hunan, Peoples R China.
[Zhu, Hongyi; Chu, Yi] Cent South Univ, Xiangya Hosp 2, Dept Gastroenterol, Changsha 410011, Peoples R China.