2Quintavalle PR, Lyder CH, Mertz P J, et al. Use of high - resolu- tion, high - frequency diagnostic ultrasound to investigate the pathogenesis of pressure ulcer development[J]. Adv SkinWound- Care, 2006,19 (9) : 498 - 505.
3Barrois B,Allaet FA.A survey of pressure sore prevalence in hos- pitals in the greater Paris region[J].J Wound Care,1995,4(5): 234- 236.
4Parslow N, Barton B, Harris C,et al. Risk assessment and preven- tion of pressure ulecers. Nursing best practice guideline: Shaping the future of nursing[M]. Toronto~ Registered Nurses, Associa- tion of Ontraio., 2005 : 1.