1. Division of Pulmonology, Department of Internal Medicine, Institute of Chest Disease, Yonsei University College of Medicine, Seoul, Republic of Korea
2. Department of Transplantation Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
3. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Lung Institute of Medical Research, Seoul National University College of Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center,
Seoul, Republic of Korea