1. The prevalence of nosocomial Infections in intensive care units in Europe. European Prevalence of infection in Intensive care (EPIC) study;Louis;JAMA,1995
2. The efficacy of infection surveillance and central programs in preventing nosocomial infections in US hospitals (SENIC);Haley;Am J Epidemiol,1985
3. Surveillance of Hospital Acquired Bacteraemia in English Hospitals 1997–2002;Nosocomial Infection National Surveillance Service (NINSS),2002
4. Guidance on the control of infection in hospitals;Hospital Infection Working Group of the Department of Health and Public Health Laboratory Service: Hospital Infection Control,1995
5. Recommendations for the prevention and control of tuberculosis at a local level, Department of Health, 1996.