3Schoonhoven L,Haalboom JR,Bousema MT,et al. Prospe ctivecohort study of routine use 'of risk assessment scales for prediction of pressureul-cers [J ].BMJ,2002,325 (7368) : 797.
4Bergstrom N, Demuth PJ, Braden BJ. A clinical trial of the Braden Scale for predicting pressuresorerisk [J].Nursing Clin North Am, 1987,22 (2) :417-428.