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Saunders RP, Dowda M, Pfeiffer KA, Brown WH, Pate RR.Saunders RP, et al. Among authors: pfeiffer ka.Int J Environ Res Public Health. 2019 Dec 22;17(1):101. doi: 10.3390/ijerph17010101.Int J Environ Res Public Health. 2019.PMID: 31877840Free PMC article.Clinical Trial.