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Crespo-Cebada E, Urbanos-Garrido RM.Crespo-Cebada E, et al.Health Policy. 2012 Feb;104(2):193-9. doi: 10.1016/j.healthpol.2011.10.007. Epub 2011 Nov 8.Health Policy. 2012.PMID: 22071455