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Kalich KA, Chomitz V, Peterson KE, McGowan R, Houser RF, Must A.Kalich KA, et al. Among authors: peterson ke.BMC Pediatr. 2008 Mar 3;8:9. doi: 10.1186/1471-2431-8-9.BMC Pediatr. 2008.PMID: 18312696Free PMC article.