1. Inflammatory Bowel Disease Unit, IASO General Hospital, 264 Mesogeion Avenue, Holargos, 15562 Athens, Greece
2. 1st Surgical Unit, Saint Panteleimon Hospital, D. Mantouvalou 3, 18454 Nicea, Greece
3. Experimental-Research Center, ELPEN Pharmaceuticals, 95 Marathonos Avenue, Pikermi, 19009 Athens, Greece