1 University of Medicine and Pharmacy "Carol Davila," Bucharest, Romania; Emergency Institute of Cardiovascular Diseases "Prof. Dr. C. C. Iliescu," Cardiology Department, Bucharest, Romania. Electronic address: bogdan.a.popescu@gmail.com.
2 University of Medicine and Pharmacy "Carol Davila," Bucharest, Romania; Emergency Institute of Cardiovascular Diseases "Prof. Dr. C. C. Iliescu," Cardiology Department, Bucharest, Romania.
3 University of Medicine and Pharmacy "Carol Davila," Bucharest, Romania; Elias Emergency University Hospital, Cardiology Department, Bucharest, Romania.