RT Journal Article SR Electronic T1 Review: enhanced oral hygiene prevents respiratory infection in elderly people in hospitals and nursing homesCommentary JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 55 OP 55 DO 10.1136/ebn.12.2.55 VO 12 IS 2 A1 Cindy Doucette YR 2009 UL http://ebn.bmj.com/content/12/2/55.abstract AB