Heart Failure, Congestive

• University of California - Los Angeles (UCLA) — Los Angeles, California, United States
• University of California at San Francisco, San Francisco General Hospital — San Francisco, California, United States
• Northwestern Medical Faculty Foundation Clinics & Northwestern Memorial Hospital Chicago — Chicago, Illinois, United States
• University of North Carolina at Chapel Hill — Chapel Hill, North Carolina, United States

• Tufts Medical Center — Boston, Massachusetts, United States

• Istituto di Clinica Medica I° e Cardiologia A.O.C. — Careggi, Italy
• Azienda Ospedale S. Anna — San Fermo Della Battaglia (CO), Italy

• Sandwell Hospital — Birmingham, United Kingdom
• Good Hope Hospital — Sutton Coldfield, United Kingdom

• GSK Investigational Site — Overland Park, Kansas, United States

• GE Healthcare — Princeton, New Jersey, United States

• Huntsville, Alabama, United States
• Los Angeles, California, United States
• Orange, California, United States
• San Diego, California, United States

Not specified

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