1. Division of Cardiology; St. Paul's Hospital, University of British Columbia; Vancouver Canada
2. Division of Cardiology, Department of Medicine; University of Alberta, Mazankowski Alberta Heart Institute; 2C2 WMC-8440-112 Street, Edmonton Canada T6G 2B7
3. Canadian VIGOUR Center; University of Alberta; Edmonton Canada
4. Duke Clinical Research Institute; Durham NC USA
5. Division of Cardiology; Montefiore Medical Center; Bronx NY USA
6. Division of Cardiology; San Francisco VA Medical Center; San Francisco CA USA
7. Sahlgrenska University Hospital/Östra-Goteborg University; Sweden
8. Department of Cardiovascular Medicine; Kaufman Center for Heart Failure, Heart and Vascular Institute, Cleveland Clinic; Cleveland OH USA