title: The economics of Viagra.
authors.forename: A
authors.initials: A
authors.lastname: Keith
mesh_terms: D016527:Drug Costs / Q000706:statistics & numerical data / Q000639:trends; D004345:Drug Industry / Q000191:economics*; D004465:Economic Competition; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006279:Health Maintenance Organizations / Q000191:economics; D006801:Humans; D019458:Insurance Coverage / Q000191:economics*; D007564:Japan; D008019:Life Style; D008389:Marketing of Health Services / Q000458:organization & administration*; D006278:Medicare / Q000191:economics; D010726:Phosphodiesterase Inhibitors / Q000191:economics* / Q000627:therapeutic use; D010879:Piperazines / Q000191:economics* / Q000627:therapeutic use; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D006113:United Kingdom; D014481:United States
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate