1. From the Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Republic of Korea (S.-R.L., E.-K.C., M.-J.C., S.O.)
2. Department of Medical Statistics, College of Medicine, Catholic University of Korea, Seoul, Republic of Korea (K.-D.H., J.-H.J.)
3. Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Chest and Heart Hospital, United Kingdom (G.Y.H.L.)
4. Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Denmark (G.Y.H.L.).