RT Journal Article SR Electronic T1 Exposure-based cognitive behavioural therapy is effective in reducing post-traumatic stress disorder severity in emergency service personnel JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 54 OP 54 DO 10.1136/ebnurs-2018-103004 VO 22 IS 2 A1 Kerin, Úna YR 2019 UL http://ebn.bmj.com/content/22/2/54.abstract AB