Environmental influences upon time of arrival at puberty.
D000293:Adolescent; D000367:Age Factors; D001824:Body Constitution; D004777:Environment; D005260:Female; D006130:Growth Disorders; D006801:Humans; D008297:Male; D011627:Puberty; D012737:Sex Factors; D012959:Socioeconomic Factors; D013997:Time Factors