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Legido-Quigley H, Nolte E, Green J, la Parra D, McKee M.Legido-Quigley H, et al.Health Policy. 2012 Apr;105(1):46-54. doi: 10.1016/j.healthpol.2012.02.002. Epub 2012 Feb 29.Health Policy. 2012.PMID: 22381944