title: Comment on Kanis et al.: Pitfalls in the external validation of FRAX.
authors.forename: M J
authors.initials: MJ
authors.lastname: Bolland
authors.forename: A
authors.initials: A
authors.lastname: Grey
authors.forename: G
authors.initials: G
authors.lastname: Gamble
authors.forename: I R
authors.initials: IR
authors.lastname: Reid
mesh_terms: D006801:Humans; D058866:Osteoporotic Fractures / Q000209:etiology*; D018570:Risk Assessment / Q000379:methods*