title: Altitude and fertility.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000531:Altitude; D005260:Female; D005298:Fertility; D006801:Humans; D007231:Infant, Newborn; D008875:Middle Aged; D010568:Peru; D011158:Population Growth; D012959:Socioeconomic Factors