1. Cardiovascular Division; Brigham and Women's Hospital; Boston MA USA
2. BHF Glasgow Cardiovascular Research Centre; Institute of Cardiovascular and Medical Sciences, University of Glasgow; Glasgow UK
3. Department of Clinical Sciences; University of Texas Southwestern Medical Center; Dallas TX USA
4. Ralph H. Johnson Veterans Affairs Medical Center and Medical University of South Carolina; Charleston SC USA
5. Department of Cardiology; University Medical Centre, Groningen, University of Groningen; Groningen the Netherlands
6. Department of Cardiology; Medical University Graz; Graz Austria
7. Novartis Pharmaceuticals; East Hanover NJ USA