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Balcazar HG, Byrd TL, Ortiz M, Tondapu SR, Chavez M.Balcazar HG, et al. Among authors: byrd tl.J Health Care Poor Underserved. 2009 Nov;20(4):1079-94. doi: 10.1353/hpu.0.0209.J Health Care Poor Underserved. 2009.PMID: 20168020Clinical Trial.