title: Sample size estimations.
authors.forename: C
authors.initials: C
authors.lastname: Vaughan
authors.forename: A
authors.initials: A
authors.lastname: Bowen
mesh_terms: D000818:Animals; D006801:Humans; D011643:Publishing; D012107:Research Design / Q000706:statistics & numerical data*; D018401:Sample Size; D015983:Selection Bias