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Barraza-Lloréns M, Bertozzi S, González-Pier E, Gutiérrez JP.Barraza-Lloréns M, et al. Among authors: gutierrez jp.Health Aff (Millwood). 2002 May-Jun;21(3):47-56. doi: 10.1377/hlthaff.21.3.47.Health Aff (Millwood). 2002.PMID: 12026003