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Afendulis CC, Kessler DP.Afendulis CC, et al.Int J Health Care Finance Econ. 2011 Sep;11(3):165-79. doi: 10.1007/s10754-011-9095-5. Epub 2011 Aug 18.Int J Health Care Finance Econ. 2011.PMID: 21850551Free PMC article.