1. Department of Family Medicine, Chungbuk National University Hospital , Chungju-si , South Korea
2. Division of Cardiology, Department of Internal Medicine, Korea University College of Medicine and Korea University Medical Center , Seoul , South Korea
3. Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital , 776, 1sunhwan-ro, Seowon-gu, Cheonju-si 28644, Chungcheonbuk-do , South Korea
4. Department of Statistical Analysis, Zarathu Co., Ltd , Seoul , South Korea
5. Department of Internal Medicine, College of Medicine, Chungbuk National University , Chungju-si 28644 , South Korea
6. Department of Family Medicine, Severance Hospital, Yonsei University College of Medicine , Seoul , South Korea
7. Department of Internal Medicine, Korea University College of Medicine and Korea University Medical Center , Seoul , South Korea
8. Department of Cardiology, Department of Internal Medicine, Korea University Guro Hospital , Seoul , South Korea