Parental age of homosexuals.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006716:Homosexuality / Q000209:etiology*; D006801:Humans; D008297:Male; D008423:Maternal Age; D008875:Middle Aged; D010290:Parents; D012923:Social Class