Dimitrios Karapiperis1, Spyridon
Vrakas2, Simone Ignatova1, George
Tribonias3, Thomas Franzen1
1Department of Gastroenterology, Vrinnevi General
Hospital of Norrkoping, Norrkoping, Sweden
2Department of Gastroenterology, Tzaneio General
Hospital, Athens, Greece
3Department of Gastroenterology, General Hospital of
Nikaia-Piraeus ”Agios Panteleimon”, Athens, Greece