Link to the Show / Show NotesThis summary covers the issue of May 10, 2007. Featured are articles on a quadrivalent vaccine against HPV to prevent high-grade cervical lesions, a quadrivalent vaccine against HPV to prevent anogenital diseases, a case-control study of HPV and oropharyngeal cancer, end-of-life practices in the Netherlands under the euthanasia act, and cancer regression by senescence; a review article on sodium and potassium in the pathogenesis of hypertension; a case report of a man with fever and pain and swelling of both eyes and the right ear; and Perspective articles on mandating HPV vaccination in the United States, on introducing HPV vaccine in developing countries, and on legal regulation of physician-assisted death.