Kwhanmien Kim, Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital, Seoul National College of Medicine, 82 Gumi-ro 173, Bundang-gu, Seongnam-si, Gyeonggi-do 13620, Republic of KoreaSeokjin Haam. Department of Thoracic and Cardiovascular Surgery, Ajou University Hospital, Ajou University School of Medicine, World cup-ro 164, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
Hyun Koo Kim, Department of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, Korea University College of Medicine, Gurodong-ro 148, Guro-gu, Seoul 08308, Republic of Korea