RT Journal Article SR Electronic T1 US Medicare data show incidence of hospital-acquired pressure ulcers is 4.5%, and they are associated with longer hospital stay and higher risk of death JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 118 OP 119 DO 10.1136/eb-2012-101112 VO 16 IS 4 A1 Zena Moore YR 2013 UL http://ebn.bmj.com/content/16/4/118.abstract AB