1. Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. University Emergency Hospital of Bucharest, Carol Davila University of Medicine and Pharmacy, 050098 Bucharest, Romania
3. Bagdasar-Arseni Clinical Emergency Hospital, 041915 Bucharest, Romania
4. Theodor Burghele Clinical Hospital, 061344 Bucharest, Romania
5. Colțea Clinical Hospital, 030167 Bucharest, Romania