RT Journal Article SR Electronic T1 Does certification of staff nurses improve patient outcomes? JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 54 OP 55 DO 10.1136/ebnurs.2011.100228 VO 15 IS 2 A1 Mary A Blegen YR 2012 UL http://ebn.bmj.com/content/15/2/54.abstract AB