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Dayer LE, Shilling R, Van Valkenburg M, Martin BC, Gubbins PO, Hadden K, Heldenbrand S.Dayer LE, et al. Among authors: gubbins po.JMIR Mhealth Uhealth. 2017 Apr 19;5(4):e45. doi: 10.2196/mhealth.6582.JMIR Mhealth Uhealth. 2017.PMID: 28428169Free PMC article.