title: [An interesting footnote].
authors.forename: Urban
authors.initials: U
authors.lastname: Forsum
mesh_terms: D001431:Bacteriological Techniques / Q000592:standards*; D002624:Chemistry, Clinical / Q000592:standards*; D006801:Humans; D012016:Reference Values; D009626:Terminology as Topic; D014894:Weights and Measures / Q000592:standards