1. Department of Internal Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400347 Cluj-Napoca, Romania
2. Cardiology Department, Emergency Clinical Hospital of Bucharest, 014461 Bucharest, Romania
3. Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
4. Department of Internal Medicine, Cluj County Emergency Hospital, 400347 Cluj-Napoca, Romania