title: The rise and fall of viagra.
authors.affiliation: General practitioner, London.
authors.forename: A
authors.initials: A
authors.lastname: Berger
mesh_terms: D004791:Enzyme Inhibitors; D015276:Health Care Rationing; D006801:Humans; D008402:Mass Media; D010879:Piperazines; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D004791:Enzyme Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate