1. Department of Minimally Invasive Hepatic Surgery, the First Affiliated Hospital of Harbin Medical University, Key Laboratory of Hepatosplenic Surgery, Ministry of Education, Harbin, Heilongjiang, China
2. The First Department of General Surgery, the Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
3. Department of Pediatric Surgery, the First Affiliated Hospital of Harbin Medical University, Key Laboratory of Hepatosplenic Surgery, Harbin, Heilongjiang, China