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Wittkowski A, Cartwright K, Emsley R, Bee P, Camacho E, Calam R, Cross C, Abel KM, Reid H.Wittkowski A, et al. Among authors: reid h.Trials. 2018 Sep 21;19(1):516. doi: 10.1186/s13063-018-2918-7.Trials. 2018.PMID: 30241568Free PMC article.