title: Simple sample size calculation.
authors: York Trials Unit, Department of Health Sciences, University of York, York, UK. djt6@york.ac.uk
authors: David J
authors: DJ
authors: Torgerson
authors: Jeremy N V
authors: JN
authors: Miles
mesh_terms: D006801:Humans; D012107:Research Design / Q000706:statistics & numerical data*; D018401:Sample Size