RT Journal Article SR Electronic T1 Patients who saw an information video 1 week before colonoscopy had reduced anxiety and better knowledge immediately before the procedure JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 79 OP 79 DO 10.1136/ebn.3.3.79 VO 3 IS 3 YR 2000 UL http://ebn.bmj.com/content/3/3/79.abstract AB