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Langley PC, Ruiz-Iban MA, Molina JT, De Andres J, Castellón JR.Langley PC, et al.J Med Econ. 2011;14(3):367-80. doi: 10.3111/13696998.2011.583303. Epub 2011 May 17.J Med Econ. 2011.PMID: 21574899Free article.
DiBonaventura Md, Wagner JS, Yuan Y, L'Italien G, Langley P, Ray Kim W.DiBonaventura Md, et al.J Med Econ. 2011;14(2):253-61. doi: 10.3111/13696998.2011.566294. Epub 2011 Mar 9.J Med Econ. 2011.PMID: 21385147Free article.