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Härter M, Bartsch AL, Egger N, König HH, Kriston L, Schulz H, Tiemann M, Brütt AL, Buchholz A.Härter M, et al. Among authors: brutt al.Trials. 2015 Oct 9;16:447. doi: 10.1186/s13063-015-0977-6.Trials. 2015.PMID: 26452466Free PMC article.Clinical Trial.