RT Journal Article SR Electronic T1 Hydatid disease. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 589 OP 589 DO 10.1136/gut.37.4.589-b VO 37 IS 4 A1 U G Meneghelli A1 A L Martinelli A1 M G Villanova YR 1995 UL http://gut.bmj.com/content/37/4/589.3.abstract AB