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Voegtline KM, Costigan KA, Pater HA, DiPietro JA.Voegtline KM, et al. Among authors: costigan ka.Infant Behav Dev. 2013 Dec;36(4):526-33. doi: 10.1016/j.infbeh.2013.05.002. Epub 2013 Jun 7.Infant Behav Dev. 2013.PMID: 23748167Free PMC article.