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