Chang Hoon Han, MD, PhD

Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea, Corresponding Authors: Joohyung Son, MD, Department of Thoracic and Cardiovascular Surgery, Pusan National University Yangsan Hospital, Pusan National University College of Medicine, 50612 Kumoro 20, Yangsan, Republic of Korea ([email protected]); and Jae Ho Chung, MD, PhD, Department of Internal Medicine, International St. Mary’s Hospital, 22711 Simgokro 100Gil 25 Seo-gu Incheon, Republic of Korea ([email protected]).