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Petronio S, Helft PR, Child JT.Petronio S, et al. Among authors: child jt.J Public Health Res. 2013 Dec 1;2(3):e30. doi: 10.4081/jphr.2013.e30. eCollection 2013 Dec 1.J Public Health Res. 2013.PMID: 25170501Free PMC article.Review.