1. In: Infections of the central nervous system;Bleck,1997
2. Prevention and control of tetanus in childhood;Thayaparan;Curr Opin Pediatr,1998
3. Immunisation against Infectious Diseases 1992 Edition. Department of Health, Welsh Office, Scottish Office and Health Department, DHSS (Northern Ireland). HMSO, London.
4. Diptheria, tetanus, pertussis: antibody detection in New Zealand;Lau;N Z Med J,1987
5. A population-based serologic survey of immunity to tetanus in the United States;Gergen;N Engl J Med,1995