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 2 OP 3 DO 10.1136/ebn.4.1.2 VO 4 IS 1 YR 2001 UL http://ebn.bmj.com/content/4/1/2.abstract AB