title: Aiming at averages.
authors.affiliation: St James's University Hospital, Leeds LS9 7TF, UK.
authors.forename: E J
authors.initials: EJ
authors.lastname: Will
mesh_terms: D006801:Humans; D017063:Outcome Assessment, Health Care / Q000706:statistics & numerical data*; D017410:Practice Guidelines as Topic; D012015:Reference Standards; D012016:Reference Values; D016008:Statistical Distributions; D014572:Urology / Q000592:standards* / Q000706:statistics & numerical data