[Zhao, Peng] Huazhong Univ Sci & Technol, Dept Hepatobiliary Surg, Wuhan, Hubei, Peoples R China.
[Ma, Xianxiong] Huazhong Univ Sci & Technol, Dept Gastrointestinal Surg, Union Hosp, Tongji Med Coll, Wuhan, Hubei, Peoples R China.
[Cheng, Jiancheng] Huazhong Univ Sci & Technol, Union Hosp, Tongji Med Coll, Dept Cardiovasc Surg, Wuhan 430022, Hubei, Peoples R China.
[Chen, Hengyu] Hainan Med Univ, Dept Breast & Thyroid Surg, Affiliated Hosp 2, 368 Yehai Ave, Haikou 570100, Hainan, Peoples R China.
[Chen, Hengyu] Union Hosp, Tongji Med Coll, Dept Pancreat Surg, Wuhan, Peoples R China.