The impact of age on paid sexual encounters.
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York University, Toronto, Ontario, Canada.
D000293:Adolescent; D000328:Adult; D000375:Aging; D003469:Culture; D006716:Homosexuality; D006801:Humans; D007398:Interpersonal Relations; D008137:Longitudinal Studies; D008297:Male; D012380:Role; D011477:Sex Work