Department of General Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China;
Department of General Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China;
Department of General Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China;
Department of General Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China;