Heart Failure, Systolic

• Hospital de Clínicas de Porto Alegre — Porto Alegre, Rio Grande do Sul, Brazil

• Medical College of Wisconsin — Milwaukee, Wisconsin, United States

Not specified

• Aarhus University Hospital — Aarhus, Central Jutland, Denmark

• Mayo Clinic — Phoenix, Arizona, United States
• Cedars Sinai Medical Center — Los Angeles, California, United States
• Stanford Medical Center, Stanford Health Care — Palo Alto, California, United States
• California Pacific Medical Center — San Francisco, California, United States

• Banner-University Medical Center Phoenix — Phoenix, Arizona, United States
• Arizona Cardiovascular Research Center — Phoenix, Arizona, United States
• Phoenix Cardiovascular Research Group — Phoenix, Arizona, United States
• University of Arizona — Tucson, Arizona, United States

• Virginia Commonwealth University — Richmond, Virginia, United States

• UT Southwestern Medical Center — Dallas, Texas, United States

• Rush University Medical Center — Chicago, Illinois, United States

• University of Southern California — Los Angeles, California, United States
• University of California, San Francisco — San Francisco, California, United States
• University of Colorado — Denver, Colorado, United States
• University of Florida — Gainesville, Florida, United States