[1] Aristotle Univ Thessaloniki, Hippokrat Gen Hosp, Propaedeut Dept Internal Med 2, Gastroenterol & Hepatol Sect, GR-54006 Thessaloniki, Greece
[2] Aristotle Univ Thessaloniki, Hippokrat Gen Hosp, Dept Pathol, GR-54006 Thessaloniki, Greece
[3] Aristotle Univ Thessaloniki, Hippokrat Gen Hosp, Dept Internal Med 4, GR-54006 Thessaloniki, Greece