7Haley RW,Schaberg DR,Crossley KB.Extra charges andprolongation of stay attributable to nosocomial infections:A prospective inter-hospital comparison[J].American Jour-nal of Medicine.1981,70(1):51-58.
8Fagon JY,Chastre J,Hance AI,et al,Nosocomial pneumo-nia in ventilated patients:A cohort study evaluating at-tributable mortality and hospital stay [J].American Journalof Medicine,1993,94(3):281-288.
9PfaLler MA.Epidemiology of candidiasis[J]Journal of Hos-pital Infection,1995,30(SUPPL):329-338.
10Roberts R R,Scott R D,Hota B, et al. Costs attributable tohealthcare-acquired infection in hospitalized adults and a com-parison of economic methods [J]. Med Care,2010,48 (11):1026-1035.