1. Keele Cardiovascular Research Group, Centre for Prognosis Research, Keele University , Stoke-on-Trent, Straffordshire ST5 5BG , UK
2. Department of Cardiology, Hillel Yaffe Medical Center , Hadera , Israel
3. Ruth and Bruce Rappaport School of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
4. Division of Cardiology, Johns Hopkins University School of Medicine , Baltimore, MD , USA
5. London Health Sciences Centre, Western University , London, Ontario , Canada
6. Department of Cardiology, Barbra Streisand Women’s Heart Center, Smidt Heart Institute, Cedars Sinai Medical Center , Los Angeles, CA , USA