Child survival.
D000163:Acquired Immunodeficiency Syndrome / Q000401:mortality; D001938:Brazil; D002669:Child Welfare / Q000706:statistics & numerical data; D002675:Child, Preschool; D003695:Delivery of Health Care / Q000379:methods; D003906:Developing Countries / Q000706:statistics & numerical data*; D006801:Humans; D007223:Infant; D007226:Infant Mortality