1. American Heart of Poland Inc. Center for Cardiovascular Research and Development, Poland
2. Department of Cardiology, University Hospital of Copenhagen, Rigshospitalet, Denmark
3. University of Pavia, Department of Clinical Surgical, Diagnostic and Pediatric Sciences, Italy
4. Hospital de la Santa Creu i Sant Pau, Acute Cardiovascular Care Unit, Spain
5. Glenfield Hospital, Cardiology Department, Leicester, United Kingdom of Great Britain & Northern Ireland
6. Institute of Cardiology, Department of Intensive Cardiac Therapy, Warsaw, Poland