1. Department of Cardiology Johns Hopkins Hospital and School of Medicine Baltimore MD
2. Department of Cardiology Erasmus Medical Center Erasmus University Rotterdam Rotterdam the Netherlands
3. Toshiba Medical Systems Europe BV Zoetermeer the Netherlands
4. Department of Cardiology InCor Heart Lung and Blood Institute University of Sao Paulo Medical School Sao Paulo Brazil
5. National Heart Lung and Blood Institute National Institutes of Health Bethesda MD
6. Department of Radiology Charité Medical School Humboldt Berlin, Germany
7. Department of Cardiology Heart Center University of Copenhagen Copenhagen Denmark
8. Department of Cardiology Beth Israel Deaconess Medical Center Harvard University Boston MA
9. Department of Cardiology Leiden University Medical Center Leiden the Netherlands
10. Johns Hopkins Bloomberg School of Public Health Baltimore MD