1 Department of Hernia and Colorectal Surgery, The Second Hospital of Dalian Medical University, 467 Zhong Shan Road, Dalian, 116023, People's Republic of China. Electronic address: yangxu0439@163.com.
2 Department of Radiology, The Second Hospital of Dalian Medical University, 467 Zhong Shan Road, Dalian, 116023, People's Republic of China. Electronic address: drlvjianbo@163.com.
3 Department of Hernia and Colorectal Surgery, The Second Hospital of Dalian Medical University, 467 Zhong Shan Road, Dalian, 116023, People's Republic of China. Electronic address: dmuzhaohui@163.com.
4 Department of Hernia and Colorectal Surgery, The Second Hospital of Dalian Medical University, 467 Zhong Shan Road, Dalian, 116023, People's Republic of China. Electronic address: chenxincjz@gmail.com.