1. Division of Cardiology, Gangneung Asan Hospital University of Ulsan College of Medicine Gangneung Gangwon‐do South Korea
2. Division of Cardiology, Center for Medical Research and Information, Asan Medical Center University of Ulsan College of Medicine Seoul South Korea
3. Division of Clinical Epidemiology and Biostatistics, Center for Medical Research and Information, Asan Medical Center University of Ulsan College of Medicine Seoul South Korea