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Sánchez-Pérez HJ, Hernán MA, Ríos-González A, Arana-Cedeño M, Navarro A, Ford D, Micek MA, Brentlinger P.Sánchez-Pérez HJ, et al. Among authors: hernan ma.Am J Public Health. 2007 Feb;97(2):229-32. doi: 10.2105/AJPH.2005.070409. Epub 2006 Dec 28.Am J Public Health. 2007.PMID: 17194868Free PMC article.