Impact of prior authorization on the use and costs of lipid-lowering medications among Michigan and Indiana dual enrollees in Medicaid and Medicare: results of a longitudinal, population-based study.
Lu CY, Law MR, Soumerai SB, Graves AJ, LeCates RF, Zhang F, Ross-Degnan D, Adams AS. Impact of prior authorization on the use and costs of lipid-lowering medications among Michigan and Indiana dual enrollees in Medicaid and Medicare: results of a longitudinal, population-based study. Clin Ther. 2011 Jan; 33(1):135-44.