Risks of WSW.
D000293:Adolescent; D000328:Adult; D005260:Female; D018452:Homosexuality, Female; D006801:Humans; D015995:Prevalence; D012307:Risk Factors; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000635:transmission*; D014481:United States / Q000453:epidemiology