Morbidity, morality, and menarche.
D000293:Adolescent; D000367:Age Factors; D003431:Cross-Cultural Comparison; D004194:Disease; D002149:Energy Intake; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008598:Menstruation; D011247:Pregnancy