1. Internal Medicine Clinic, Clinical Emergency Hospital of Bucharest, Bucharest, Romania;
2. “ Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania;
3. Emergency Universitary Central Military Hospital, Bucharest, Romania;
4. Internal Medicine Clinic, “Sf. Ioan” Clinical Emergency Hospital, Bucharest, Romania;
5. Emergency Clinical Hospital “Sf. Pantelimon”, Bucharest, Romania