RT Journal Article SR Electronic T1 Erratum JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 72 OP 72 DO 10.1136/ebn.1.3.72 VO 1 IS 3 YR 1998 UL http://ebn.bmj.com/content/1/3/72.abstract AB