1. Department of Surgery and Cancer Research Institute Seoul National University College of Medicine Seoul Republic of Korea
2. Department of Surgery Goodjang Hospital Seoul Republic of Korea
3. Department of Surgery, Korea University Guro Hospital Korea University College of Medicine Seoul Republic of Korea
4. Department of Surgery, Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine Seoul Republic of Korea
5. Department of Surgery Chung‐Ang University Gwangmyeong Hospital Gwangmyeong Republic of Korea
6. Department of Radiology Seoul National University College of Medicine Seoul Republic of Korea