title: Impact of the introduction of guidelines on vitamin B₁₂ testing.
authors.forename: Johnny
authors.initials: J
authors.lastname: McHugh
authors.forename: Rabia
authors.initials: R
authors.lastname: Afghan
authors.forename: Edel
authors.initials: E
authors.lastname: O'Brien
authors.forename: Patricia
authors.initials: P
authors.lastname: Kennedy
authors.forename: Maeve
authors.initials: M
authors.lastname: Leahy
authors.forename: Denis
authors.initials: D
authors.lastname: O'Keeffe
mesh_terms: D006801:Humans; D017410:Practice Guidelines as Topic; D015397:Program Evaluation; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12