title: Samartzis et al. respond.
authors.forename: Dino
authors.initials: D
authors.lastname: Samartzis
authors.forename: Kenneth M C
authors.initials: KM
authors.lastname: Cheung
authors.forename: Harry M
authors.initials: HM
authors.lastname: Cullings
mesh_terms: D006801:Humans; D055959:Intervertebral Disc Degeneration / Q000209:etiology*; D011832:Radiation Injuries / Q000150:complications*