title: Letters.
authors: Mayo Clinic, Rochester, Minnesota.
authors: Ilyas S
authors: IS
authors: Aleem
authors: Russell
authors: R
authors: Gelfman
authors: Bradford
authors: B
authors: Currier
mesh_terms: D002574:Cervical Vertebrae / Q000601:surgery*; D017586:Diskectomy / Q000191:economics* / Q000379:methods*; D006801:Humans; D055959:Intervertebral Disc Degeneration / Q000601:surgery*; D007405:Intervertebral Disc Displacement / Q000601:surgery*