1. Advisory Committee on Dangerous Pathogens. HIV,1990
2. Categorisation of Pathogens According to Hazard and Categories of Containment,1990
3. Chemical Disinfection in Hospitals;Ayliffe,1993
4. British Standards Institution, British Standard 5 726 Microbiological Safety Cabinets, Parts 1-4. London, BSI
5. Plasma viraemaia in human immunodeficiency virus infection;Ayliffe;New England J. Med.,1989