Family planning: the global challenge.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005193:Family Planning Services / Q000639:trends*; D005260:Female; D014943:Global Health; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D011155:Population Control; D011158:Population Growth; D014480:United Nations