1. Department of Cardiology, “Bagdasar Arseni” Emergency Hospital, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. Department of Anaesthesia and Intensive Care I, Fundeni Clinical Institute, 022322 Bucharest, Romania
3. Department of Cardiology, Emergency Hospital “Bagdasar-Arseni”, 050474 Bucharest, Romania
4. Department of Internal Medicine, “Coltea” Clinical Hospital, 030167 Bucharest, Romania
5. Economic Cybernetics and Informatics Department, The Bucharest University of Economic Studies, 010374 Bucharest, Romania