Sexually transmitted diseases.
D002177:Candidiasis / Q000453:epidemiology; D004739:England; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D010272:Parasitic Diseases / Q000453:epidemiology; D012725:Sexual Behavior; D012749:Sexually Transmitted Diseases / Q000453:epidemiology*; D014247:Trichomonas Vaginitis / Q000453:epidemiology