1. National Pressure Ulcer Advisory Panel (NPUAP). Pressure ulcer stages revised by NPUAP. 2007 (5). Available from: www.npuap.org/pr2.htm [accessed 27.10.19].
2. European Pressure Ulcer Advisory Panel (EPUAP). Pressure ulcer treatment guidelines. 1998 (5): Available from: www.epuap.org/gltreatment.html [accessed 27.10.19].
3. National prevalence and incidence study: 6-year sequential acute care data;Whittington;Adv Skin Wound Care,2004
4. Malaysian Registry of Intensive Care (MRIC). 2012 Malaysian Registry of Intensive Care annual report. 2012. Available from: http://www.mric.org.my/Content/Document/MRICPublications/mricreport_2012.pdf [accessed 27.10.19].
5. International Guidelines. Pressure ulcer prevention: Prevalence and incidence in context. 2009 a consensus document. London: Medical Education Partnership (MEP) Ltd.