1. University Hospital Montpellier, Institut National de Science et de Recherche Médicale U1175 and University of Montpellier, Montpellier, France
2. Stanford University School of Medicine, Stanford, California, USA
3. Icahn School of Medicine at Mt Sinai, New York, New York, USA
4. Veteran Affairs Connecticut Healthcare System, West Haven, Connecticut, USA
5. Michael E. DeBakey VAMC and Baylor College of Medicine, Houston, Texas, USA
6. James J. Peters VA Medical Center, Bronx, New York, USA
7. VA Puget Sound Health Care System and University of Washington, Seattle, Washington, USA
8. VA North Texas Health Care Center, Dallas, Texas, USA
9. VA Greater Los Angeles Health Care System, Los Angeles, California, USA
10. Massachusetts General Hospital, Boston, Massachusetts, USA