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Porta CM, Singer E, Mehus CJ, Gower AL, Saewyc E, Fredkove W, Eisenberg ME.Porta CM, et al. Among authors: gower al.J Sch Health. 2017 Jul;87(7):489-497. doi: 10.1111/josh.12517.J Sch Health. 2017.PMID: 28580677Free PMC article.