Heart Failure

• VA Palo Alto Health Care System, Palo Alto, CA — Palo Alto, California, United States
• VA Eastern Colorado Health Care System, Denver, CO — Denver, Colorado, United States
• Hunter Holmes McGuire VA Medical Center, Richmond, VA — Richmond, Virginia, United States
• VA Puget Sound Health Care System Seattle Division, Seattle, WA — Seattle, Washington, United States

• Ohio State University — Columbus, Ohio, United States
• Oklahoma Cardiovascular Research — Oklahoma City, Oklahoma, United States
• Sentara Cardiovascular — Norfolk, Virginia, United States

• National Institute of Aging, Clinical Research Unit — Baltimore, Maryland, United States

• Keck Hospital of USC — Los Angeles, California, United States
• University of Florida - Jacksonville — Jacksonville, Florida, United States
• Advocate Medical Group — Downers Grove, Illinois, United States
• Edward Hospital-Advocate Medical Group — Naperville, Illinois, United States

• Yale New Haven Hospital — New Haven, Connecticut, United States

• University Medical Center Groningen — Groningen, Netherlands

Not specified

• Research Site — Harrow, United Kingdom

• Virginia Commonwealth University — Richmond, Virginia, United States

• Aarhus University Hospital, Skejby, Department of Cardiology — Aarhus, Denmark