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Spending on postapproval drug safety.
Ridley DB, Kramer JM, Tilson HH, Grabowski HG, Schulman KA. Ridley DB, et al. Health Aff (Millwood). 2006 Mar-Apr;25(2):429-36. doi: 10.1377/hlthaff.25.2.429. Health Aff (Millwood). 2006. PMID: 16522583