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Davidoff AJ, Rapp T, Onukwugha E, Zuckerman IH, Hanna N, Pandya N, Mullins CD.Davidoff AJ, et al.Med Care. 2009 Dec;47(12):1229-36. doi: 10.1097/MLR.0b013e3181b58a85.Med Care. 2009.PMID: 19786906
Smith SW, Sato M, Gore SD, Baer MR, Ke X, McNally D, Davidoff A.Smith SW, et al.Haematologica. 2012 Jan;97(1):15-20. doi: 10.3324/haematol.2011.051755. Epub 2011 Nov 18.Haematologica. 2012.PMID: 22102702Free PMC article.