[1] Aristotle Univ Thessaloniki, Ippokrat Hosp, Sch Med, Med Clin 2, Thessaloniki 54642, Macedonia, Greece
[2] Univ Hosp Larisa, Dept Gastroenterol, Larisa 41110, Greece
[3] Aristotle Univ Thessaloniki, Sch Med, Lab Pharmacol 1, Thessaloniki 54124, Macedonia, Greece
[4] 401 Gen Mil Hosp Athens, Dept Gastroenterol, Athens 54124, Greece
[5] Univ West Macedonia, Sch Healthcare Sci, Midwifery Dept, Kozani 50100, Macedonia, Greece
[6] Int Hellen Univ, Sch Hlth Sci, Dept Nutr Sci & Dietet, Alexander Campus, Thessaloniki 57400, Macedonia, Greece
[7] Aristotle Univ Thessaloniki, Papageorgiou Gen Hosp, Neonatal Dept 2, Thessaloniki 56403, Macedonia, Greece
[8] Aristotle Univ Thessaloniki, Papageorgiou Gen Hosp, NICU, Thessaloniki 56403, Macedonia, Greece
[9] Gen Hosp Aghios Pavlos Thessaloniki, Dept Internal Med, Thessaloniki 55134, Macedonia, Greece
[10] Univ Hosp, Dept Med Oncol & Hematol, CH-8091 Zurich, Switzerland
[11] Univ Zurich, CH-8091 Zurich, Switzerland
[12] Kantonsspital Aarau, Med Univ Dept, Div Gastroenterol & Hepatol, CH-5001 Aarau, Switzerland
[13] Univ Zurich, Dept Gastroenterol & Hepatol, Zurich, Switzerland
[14] 8 Fanariou St, Thessaloniki 55133, Macedonia, Greece