RT Journal Article SR Electronic T1 Validity and reliability in quantitative studies JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP ebnurs-2015-102129 DO 10.1136/eb-2015-102129 A1 Roberta Heale A1 Alison Twycross YR 2015 UL http://ebn.bmj.com/content/early/2015/05/15/eb-2015-102129.abstract AB