Expanded programme on immunization: a parish-level evaluation of the surveillance system September 1992
Severe hypersensitivity reactions among HIV-seropositive patients with tuberculosis treated with thioacetazone January 1992
New approaches to poliovirus diagnosis using laboratory techniques: memorandum from a WHO meeting 1992
Poliomyelitis case confirmation : characteristics for use by national eradication programmes BIELLIK, R J et al 1992
Impact on mortality of a community-based programme to control acute lower respiratory tract infections FAUVEAU, V et al 1992