AIDS and sex.
D000163:Acquired Immunodeficiency Syndrome; D005832:Genital Diseases, Male / Q000453:epidemiology; D006801:Humans; D008297:Male; D010322:Parvoviridae Infections / Q000453:epidemiology; D010409:Penile Diseases / Q000453:epidemiology; D012725:Sexual Behavior; D014860:Warts / Q000453:epidemiology