RT Journal Article SR Electronic T1 Purpose and procedure JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 1 OP 2 DO 10.1136/ebn.11.1.1 VO 11 IS 1 YR 2008 UL http://ebn.bmj.com/content/11/1/1.1.abstract AB