1 Department of Thoracic and Cardiovascular Surgery, Pusan National University Hospital, Medical Research Institution, Busan, Republic of Korea.
2 Department of Thoracic and Cardiovascular Surgery, Pusan National University Hospital, Medical Research Institution, Busan, Republic of Korea. Electronic address: doctorahn02@hanmail.net.
3 Department of Convergence Medicine, School of Medicine, Pusan National University, Busan, Republic of Korea.