1. Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
2. Chonnam National University Hospital, Gwangju, Korea
3. Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
4. Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, South Korea
5. College of Pharmacy, Ajou University, Suwon, South Korea
6. Division of Cardiology, Department of Internal Medicine, Duke University Medical Center, Durham, North Carolina
7. Chosun University Hospital, University of Chosun College of Medicine, Gwangju, Korea
8. Seoul St Mary’s Hospital, The Catholic University of Korea, Seoul, Korea
9. Uijeongbu St Mary’s Hospital, The Catholic University of Korea, Seoul, Korea
10. Yonsei University Wonju College of Medicine, Wonju Severance Christian Hospital, Wonju, Korea
11. Department of Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
12. Chung-Ang University College of Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea
13. Inha University Hospital, Incheon, Korea
14. Sejong General Hospital, Bucheon, Korea
15. Gyeongsang National University School of Medicine, Gyeongsang National University Hospital, Jinju, Korea
16. Keimyung University Dongsan Medical Center, Daegu, Korea
17. Department of Epidemiology and Medicine, Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland