The world's population problem. Possible interventions to reduce fertility.
D003906:Developing Countries; D004467:Economics; D004493:Education; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007255:Information Services; D008297:Male; D008428:Maternal Mortality; D011155:Population Control; D011158:Population Growth; D011247:Pregnancy; D012424:Rural Population; D014505:Urban Population; D014930:Women