1Oliver D,Britton M, Martin F,et al. Development and evaluation of evidence based risk assessment too (stratify) to predict which elderly inpatients will fall:Case control and cohort studies[J]. Br Med J, 1997,315(7115) : 1049-1053.
2King M B ,Tinetti M E. A multifactorial approach toreducing inju- rious fall[J]. Clin Geriatr Med, 1996,2 : 745-759.