1. Thomas Jefferson University Hospital Philadelphia PA USA
2. Yale University School of Medicine New Haven CT USA
3. Johns Hopkins University School of Medicine Baltimore MD USA
4. Kaiser Permanente San Jose CA USA
5. New England GRECC, VA Boston Healthcare System Boston MA USA
6. Division of Aging Brigham & Women’s Hospital, Harvard Medical School Boston MA USA
7. Montefiore Medical Center Bronx NY USA
8. The Inova Center of Outcomes Research Inova Heart and Vascular Institute Falls Church VA USA