RT Journal Article SR Electronic T1 Review: little evidence exists for type of dressing or support surface or for nutritional supplements for pressure ulcersCommentary JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 118 OP 118 DO 10.1136/ebn.12.4.118 VO 12 IS 4 A1 Sally E M Bell-Syer YR 2009 UL http://ebn.bmj.com/content/12/4/118.abstract AB