title: Value of preliminary sample size estimations.
authors.affiliation: University of Toronto, The Hospital for Sick Children, Ontario, Canada.
authors.forename: A M
authors.initials: AM
authors.lastname: Glickman
mesh_terms: D000818:Animals; D006801:Humans; D011643:Publishing; D012107:Research Design / Q000706:statistics & numerical data*; D018401:Sample Size; D015983:Selection Bias