2Amstrong D, Ayello E, Capitulo K, et al. New opportunities to im- prove pressure ulcer prevention and treatment : implications of the CMS inpatient hospital care present on admission indicators/hos- pital - acquired conditions (HAC) policy. A consensus paper from the International Expert Wound Care Advisory Panel [ J ]. Journal Wound, Ostomy, Continence Nurses ,2008,35 ( 5 ) :485.
3Lyder C H. Pressure ulcer prevention and management [ J ]. JA- MA,2003,289 (2) :223- 226.