1. Division of Cardiology, Department of Medicine, Weill Cornell Medical College, New York, New York, USA;
2. Department of Cardiology, Zealand University Hospital Roskilde, Roskilde, Denmark;
3. Epidemiological Cardiology Research Center (EPICARE), Division of Public Health Sciences, Section of Cardiology, Department of Medicine, Wake Forest School of Medicine, Winston Salem, North Carolina, USA;
4. Department of Biostatistics|Coordinating Center for Clinical Trials, School of Public Health, The University of Texas Health Science Center at Houston, Houston, Texas, USA.