title: Progress for developing countries.
authors.affiliation: Johns Hopkins University, Population Information Programme, Baltimore, Maryland 21202.
authors.forename: L
authors.initials: L
authors.lastname: Liskin
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control* / Q000523:psychology; D003376:Counseling; D003906:Developing Countries; D006266:Health Education / Q000379:methods; D006801:Humans; D012307:Risk Factors