1 2 Propaedeutic Department of Internal Medicine, Gastroenterology Section (Olga Giouleme, Nikolaos Grammatikos) of the Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece.
2 3 Department of Paediatrics (Ioannis Xinias, Antigoni Mavroudi) of the Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece.