1. Veterans Affairs Health Care System; Minnesota MN USA
2. University of Minnesota; Minnesota MN USA
3. British Heart Foundation Glasgow Cardiovascular Research Centre; Glasgow UK
4. RHJ Department of Veterans Affairs Medical Center and Medical University of South Carolina; Charleston SC USA
5. Université Paris 6; Pitie Salpetriere Hospital; Paris France
6. Population Health Research Institute and McMaster University; Hamilton Ontario Canada
7. San Francisco Veterans Affairs Medical Center and University of California; San Francisco CA USA
8. Washington Veterans Affairs Medical Center and Georgetown University; Washington DC USA