Anal warts and anal coitus.
D000293:Adolescent; D000328:Adult; D001004:Anus Diseases / Q000209:etiology*; D003075:Coitus; D005260:Female; D006069:Gonorrhea / Q000150:complications; D006716:Homosexuality; D006801:Humans; D008297:Male; D008875:Middle Aged; D010262:Paraphilic Disorders; D010409:Penile Diseases / Q000150:complications; D012189:Retrospective Studies; D013587:Syphilis / Q000150:complications; D014526:Urethritis / Q000150:complications; D014860:Warts / Q000209:etiology*