RT Journal Article SR Electronic T1 Angina pectoris and oesophageal angina JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 630 OP 630 DO 10.1136/gut.45.4.630 VO 45 IS 4 A1 M BORTOLOTTI YR 1999 UL http://gut.bmj.com/content/45/4/630.1.abstract AB