7Kirkland KB,Briggs JP,Trivette SL,et al. The impact of surgical-site infections in the 1990s:attributable mortality,excess length of hospitalization,and extra costs[J]. Infect Control Hosp Epidemiol,1999,20(11):725.
8Pena C,Pujol M,Pallares R,et al. Estimation of costs attributable to nosocomial infection:prolongation of hospitalization and calculation of alternative costs[J]. Med Clin (Barc),1996,106(12):441.
