Thorarche--a seasonal influence but no secular trend.
D000293:Adolescent; D000328:Adult; D002648:Child; D004542:Ejaculation; D005260:Female; D006801:Humans; D008297:Male; D008572:Menarche; D011627:Puberty; D012621:Seasons; D012649:Self Concept; D011795:Surveys and Questionnaires