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