Department of Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea

Funding/Support: None reported.

Financial Disclosure: None reported.

Correspondence: Heung-Kwon Oh, M.D., Ph.D., Department of Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 82, Gumi-ro 173beon-gil, Bundang-gu, 13620, Seongnam-si, Gyeonggi-do, Republic of Korea. E-mail: [email protected]