Department of Hepatobililiary Surgery The Affiliated Hospital of Medical College Qingdao University Qingdao 266003 China;
Department of Hepatobililiary Surgery The Affiliated Hospital of Medical College Qingdao University Qingdao 266003 China;
Department of Hepatobililiary Surgery The Affiliated Hospital of Medical College Qingdao University Qingdao 266003 China;
Department of Hepatobililiary Surgery Qianfoshan Hospital Jinan 250014 China;
Department of Hepatobililiary Surgery The Affiliated Hospital of Medical College Qingdao University Qingdao 266003 China;