RT Journal Article SR Electronic T1 Provision of facilities for manometry and pH monitoring in the investigation of patients with oesophageal disease. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 106 OP 107 DO 10.1136/gut.32.1.106 VO 32 IS 1 A1 Watson, A A1 Atkinson, M YR 1991 UL http://gut.bmj.com/content/32/1/106.abstract AB