1. Gastroenterology Department , Colentina Clinical Hospital , Bucharest , Romania
2. Internal Medicine Department , “Carol Davila” School Of Medicine , Bucharest , Romania
3. Department of Gastroenterology and Hepatology , “Victor Babeș” University of Medicine and Pharmacy , Timișoara , Romania
4. Gastroenterology Department , Floreasca Emergency Hospital , Bucharest , Romania
5. Department of Gastroenterology , County Clinical Emergency Hospital of Constanta , Romania
6. Faculty of General Medicine , Ovidius University , Constanta , Romania
7. Gastroenterology Department , Emergency University Hospital , Bucharest , Romania