Epidemiology and control of sexually transmitted diseases.
D000293:Adolescent; D000328:Adult; D002170:Canada; D006069:Gonorrhea / Q000517:prevention & control; D006801:Humans; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000517:prevention & control*; D013587:Syphilis / Q000517:prevention & control