RT Journal Article SR Electronic T1 Bleeding varices in the elderly. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 576 OP 576 DO 10.1136/gut.34.4.576-a VO 34 IS 4 A1 V McDermott YR 1993 UL http://gut.bmj.com/content/34/4/576.2.abstract AB