6[1]Barratt E. Pressure scores: Putting calculators in their place. Nursing Times. 1987,18:67-70.
7[2]Bergstrom N,Braden B, Laguyya A , et al. The braden scale for predicting pressure sore risk. Nursing Research, 1987,36(4):205-210.
8[3]Norton D, Mclaren R, Exton Smith AN. An investigation of geriatric nursing problem in hospitals. London:National corporation for the care of old people.
9[4]Pang S, Wang TK. Predicting pressure sore risk with the Norton, Braden, and Waterlow Scales in a Hong Kong rehabilitation hospital. Nursing Research, 1998,47(3):147-153.
10[5]Bergstrom N, Demuth PJ, et al. A prospective study of pressure score risk among institutionalized elderly. Journal of the American Geriatrics Society.1992,40:748-758.