RT Journal Article SR Electronic T1 Clinical Evidence JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 40 OP 40 DO 10.1136/ebn.3.2.40 VO 3 IS 2 A1 Andrew Polmear YR 2000 UL http://ebn.bmj.com/content/3/2/40.abstract AB