Affiliation: | 1. Department of Cardiology, Busan Paik Hospital, University of Inje College of Medicine, Busan, South Korea;2. Department of Cardiology, Kosin University Medical Center, Busan, South Korea;3. Department of Cardiology, Pusan National University Hospital, Busan, South Korea;4. Department of Cardiology and Cardiovascular Surgery, Pusan National University Yangsan Hospital, Yangsan, South Korea |