Viagra--it's no free ride.
van der Linde
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D004791:Enzyme Inhibitors / Q000191:economics* / Q000627:therapeutic use; D007172:Erectile Dysfunction / Q000188:drug therapy / Q000191:economics*; D005260:Female; D017048:Health Care Costs; D006801:Humans; D008297:Male; D008329:Managed Care Programs / Q000191:economics; D011795:Surveys and Questionnaires
D004791:Enzyme Inhibitors