1. BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences; University of Glasgow; Glasgow UK
2. Veterans Affairs Medical Center and University of Minnesota; Minneapolis MN USA
3. Université Paris 6 and Hospital Pitié-Salpêtrière; Paris France
4. Division of Cardiovascular Medicine; Brigham and Women's Hospital; Boston MA USA
5. Hamilton Health Sciences; McMaster University; Hamilton ON Canada
6. Ralph H. Johnson Veterans Affairs Medical Center and Medical University of South Carolina; Charleston SC USA
7. Georgetown University and Washington DC Veterans Affairs Medical Center; Washington DC USA