1. Intensive Cardiac Care Unit, Cardiology Department, Hospital de la Santa Creu i Sant Pau, CIBERCV, Spain
2. Cardiology Service, Universitari Bellvitge Hospital-IDIBELL, Spain
3. Cardiovascular Critical Care Unit, CIBER-CV Vall d’Hebron Hospital, Spain
4. Acute Cardiac Care Unit, Hospital Clínico San Carlos, Spain
5. Advanced Heart Failure and Transplant Unit, Hospital Universitario Puerta de Hierro, Spain
6. Emergency Medicine, Helsinki University Hospital, Finland
7. Heart and Lung Centre, Helsinki University Hospital, Finland
8. Department of Internal Medicine/Cardiology, Heart Center Leipzig at University of Leipzig, Germany