1. 1st Cardiology Department, “Hippokration” General Hospital, University of Athens Medical School,
Athens, Greece
2. 3rd Cardiology Department, “Sotiria” Chest Diseases Hospital, University of Athens Medical
School, Athens, Greece
3. 1st Cardiology Department, “Hippokration” General Hospital, University of Athens Medical School, Athens, Greece
4. Laboratory of Experimental Surgery and Surgical Research “N.S. Christeas”,
University of Athens Medical School, Athens, Greece