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Hemming, K. et al. (2017). Erratum to: Sample size calculations for cluster randomised controlled trials with a fixed number of clusters. BMC medical research methodology. 17 (1), p. 1. [Online].
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Hemming, K. et al. (2017). Erratum to: Sample size calculations for cluster randomised controlled trials with a fixed number of clusters. BMC medical research methodology. 17 (1), p. 1. [Online].