title: Introduction of a new cobalamin (vitamin B12) assay: lessons from a flawed validation study.
authors.affiliation: Laboratory for Clinical Chemistry and Hematology, Bronovo Hospital, The Hague, The Netherlands.
authors.forename: André P
authors.initials: AP
authors.lastname: van Rossum
authors.forename: Jacqueline Klein
authors.initials: JK
authors.lastname: Gunnewiek
authors.forename: François M
authors.initials: FM
authors.lastname: Verheijen
authors.forename: L Tom
authors.initials: LT
authors.lastname: Vlasveld
authors.forename: Ad
authors.initials: A
authors.lastname: Castel
authors.forename: Michael A
authors.initials: MA
authors.lastname: Fouraux
mesh_terms: D015415:Biomarkers / Q000097:blood; D006801:Humans; D007118:Immunoassay / Q000379:methods* / Q000592:standards; D015203:Reproducibility of Results; D012189:Retrospective Studies; D014805:Vitamin B 12 / Q000097:blood*; D014808:Vitamin D Deficiency / Q000097:blood*
chemical_list: D015415:Biomarkers; D014805:Vitamin B 12