Erratum to: Sample size calculations for cluster randomised controlled trials with a fixed number of clusters
© The Author(s). 2017
Published: 19 January 2017
The original article was published in BMC Medical Research Methodology 2011 11:102
After publication of the original article , it came to the authors’ attention that there was a typing error in equation 16. There should be a rho on the denominator of this equation.
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