title: Calculating sample size. Alpha, Beta, Mu and Sigma--it's all Greek.
authors.affiliation: Department of Anaesthesiology, The University of Hong Kong, Hong Kong Special Administrative Region. htswchoi@hku.hk.
authors.forename: S W
authors.initials: SW
authors.lastname: Choi
authors.affiliation: Department of Anaesthesiology, The University of Hong Kong.
authors.forename: D H D
authors.initials: DH
authors.lastname: Tran
mesh_terms: D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data*; D018401:Sample Size; D013223:Statistics as Topic