RT Journal Article SR Electronic T1 Guidelines improve nurses’ knowledge and confidence in diagnosis of anxiety and challenging behaviours in people with intellectual disabilities JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 16 OP 16 DO 10.1136/eb-2015-102168 VO 19 IS 1 A1 Bressington, Daniel A1 Chien, Wai Tong YR 2016 UL http://ebn.bmj.com/content/19/1/16.abstract AB