1. Department of Surgery, Dongnam Institute of Radiological and Medical Sciences, Cancer Center, Busan, Korea.
2. Regional Cardiocerebrovascular Disease Center, Gyeongsang National University Hospital, Jinju, Korea.
3. Department of Surgery, Kosin University Gospel Hospital, Busan, Korea.
4. Department of Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Korea.