Chronic Heart Failure

• Cukurova University School of Medicine — Adana, Turkey (Türkiye)
• Kocatepe University School of Medicine — Afyonkarahisar, Turkey (Türkiye)
• Hacettepe University School of Medicine — Ankara, Turkey (Türkiye)
• Yüksek İhtisas Training and Research Hospital — Ankara, Turkey (Türkiye)

• George E Wahlen Vetern Affairs Medical Center — Salt Lake City, Utah, United States
• Veterans Affairs Salt Lake City Heath Care System — Salt Lake City, Utah, United States

• Nassau University Medical Center — East Meadow, New York, United States

• Charite Universitatsmedizin Berlin, Campus Virchow-Klinikum — Berlin, Germany
• German Heart Center — Berlin, Germany
• Clinical Centre of Serbia, Clinic for Cardiology — Belgrade, Serbia
• Clinical Hospital Center "Dr Dragiša Mišović-Dedinje", Department of Cardiology — Belgrade, Serbia

• FSSICardiology — Moscow, Russia

• University of Colorado Hospital — Aurora, Colorado, United States
• Denver Health — Denver, Colorado, United States
• VA Eastern Colorado Health Care System(ECHCS) — Denver, Colorado, United States

• Emory University School of Medicine — Atlanta, Georgia, United States
• Johns Hopkins Hospital — Baltimore, Maryland, United States
• Tufts Medical Center — Boston, Massachusetts, United States
• Massachusetts General Hospital — Boston, Massachusetts, United States

• University Medical Center Groningen — Groningen, Netherlands

• Universty Hospital Toulouse Cardiology — Toulouse, France

Not specified