1. The First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
2. Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Key Laboratory of Metabolism and Gastrointestinal Tumor, Jinan, Shandong, China.