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Kleinert R, Heiermann N, Plum PS, Wahba R, Chang DH, Maus M, Chon SH, Hoelscher AH, Stippel DL.Kleinert R, et al.J Med Internet Res. 2015 Nov 17;17(11):e263. doi: 10.2196/jmir.5035.J Med Internet Res. 2015.PMID: 26577020Free PMC article.