1. Department of Gastroenterology Clinical Emergency Hospital of Bucharest Bucharest Romania
2. University of Medicine and Pharmacy Craiova Romania
3. Department 5 “Carol Davila” University of Medicine and Pharmacy Bucharest Romania
4. Department of Gastroenterology University of Medicine and Pharmacy of Craiova Craiova Romania
5. University of Medicine and Pharmacy “Grigore T. Popa” Iasi Iasi Romania
6. Dr. Dragisa Misovic‐Dedinje University Clinic Belgrade Serbia