1. Department of Pediatric Surgery, Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266000, China
2. Department of Pediatric Surgery, Yijishan Hospital of Wannan Medical College, Wannan Medical College, Wuhu 246400, China
3. College of Computer Science and Technology, Qingdao University, Qingdao 266000, China
4. Shandong Provincial Key Laboratory of Digital Medicine and Computer-assisted Surgery, Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266000, China
5. School of Computer Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China