title: Letter to the editor in response to Villa T, La Barbera L, Galbusera F, "comparative analysis of international standards for the fatigue testing of posterior spinal fixation systems".
authors.affiliation: ASTM F04.25 Subcommittee on Spinal Devices, Danville, PA, USA.
authors.forename: Jove H
authors.initials: JH
authors.lastname: Graham
authors.affiliation: ASTM F04.25 Subcommittee on Spinal Devices, Danville, PA, USA.
authors.forename: Paul A
authors.initials: PA
authors.lastname: Anderson
authors.affiliation: ASTM F04.25 Subcommittee on Spinal Devices, Danville, PA, USA.
authors.forename: David B
authors.initials: DB
authors.lastname: Spenciner
mesh_terms: D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery*; D008422:Materials Testing / Q000592:standards*; D013123:Spinal Fusion / Q000295:instrumentation*; D013314:Stress, Mechanical