Department of Surgery, Cancer Center, Dongnam Institute of Radiological and Medical Sciences, Busan, South Korea. Department of Surgery, Kosin University Gospel Hospital, Busan, South Korea. Department of Surgery, Gyeongsang National University School of Medicine, Jinju, South Korea. jshgnu@gmail.com. Department of Surgery, Gyeongsang National University College of Medicine and Gyeongsang National University Changwon Hospital, 11, Samjeongja-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, Republic of Korea. jshgnu@gmail.com. Department of Surgery, Gyeongsang National University Hospital, Jinju, South Korea. Department of Surgery, Gyeongsang National University College of Medicine and Gyeongsang National University Changwon Hospital, 11, Samjeongja-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, Republic of Korea. Department of Surgery, Gyeongsang National University School of Medicine, Jinju, South Korea.