title: Sexually transmitted diseases. Three. Cause for concern.
mesh_terms: D005260:Female; D006266:Health Education; D006509:Hepatitis B / Q000517:prevention & control* / Q000635:transmission; D006716:Homosexuality; D006801:Humans; D008297:Male; D012749:Sexually Transmitted Diseases / Q000517:prevention & control*; D006113:United Kingdom