World malaria situation in 1991. Part I.
D003431:Cross-Cultural Comparison; D003430:Cross-Sectional Studies; D003906:Developing Countries; D006801:Humans; D015994:Incidence; D008288:Malaria / Q000453:epidemiology* / Q000401:mortality / Q000517:prevention & control; D016778:Malaria, Falciparum / Q000453:epidemiology / Q000401:mortality / Q000517:prevention & control; D016019:Survival Analysis; D014944:World Health Organization