title: Why do different EQA schemes have apparently different limits of acceptability?
authors.forename: Bedrich
authors.initials: B
authors.lastname: Friedecky
authors.forename: Josef
authors.initials: J
authors.lastname: Kratochvila
authors.forename: Marek
authors.initials: M
authors.lastname: Budina
mesh_terms: D019963:Clinical Chemistry Tests / Q000592:standards*; D006801:Humans; D011786:Quality Control; D012015:Reference Standards