Heart Failure, Systolic

• University of California, San Francisco — San Francisco, California, United States
• Denver Health — Denver, Colorado, United States
• Johns Hopkins University Medical Center — Baltimore, Maryland, United States
• University of Michigan — Ann Arbor, Michigan, United States

• Research Site — Berlin, Germany
• Research Site — Erfurt, Germany
• Research Site — Gifhorn, Germany
• Research Site — Leipzig, Germany

• University of Florida — Gainesville, Florida, United States

• Department of Cardiology, Herlev and Gentofte University Hospital, University of Copenhagen — Hellerup, Copenhagen, Denmark

• University of Washington — Seattle, Washington, United States

• Department of Cardiology, Herlev and Gentofte University Hospital, University of Copenhagen — Hellerup, Copenhagen, Denmark
• Department of Infectious Diseases, University Hospital of Copenhagen, Cystic Fibrosis Centre, Copenhagen, Denmark — Copenhagen, Denmark

• Department of Cardiology | Center for Translational Cardiology and Pragmatic Randomized Trials (CTCPR) Cardiovascular Non-Invasive Imaging Research Laboratory (CIRL) — Hellerup, Denmark

• Minneapolis Heart Foundation Institute — Minneapolis, Minnesota, United States
• The Linder Center for Education and Research at The Christ Hospital — Cincinnati, Ohio, United States
• The Ohio State University — Columbus, Ohio, United States
• University of Wisconsin at Madison — Madison, Wisconsin, United States

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

Not specified