RT Journal Article SR Electronic T1 Review: support surfaces, nutritional supplements, and topical agents help prevent pressure ulcers 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/ebn.10.2.54 VO 10 IS 2 YR 2007 UL http://ebn.bmj.com/content/10/2/54.abstract AB