title: Reviewer's comment.
authors.affiliation: Orthopädische Universitätsklinik Balgrist, CH-8008 Zurich, Switzerland.
authors.forename: N
authors.initials: N
authors.lastname: Boos
mesh_terms: D001863:Bone Screws; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D012447:Sacrum / Q000000981:diagnostic imaging; D013122:Spinal Diseases / Q000000981:diagnostic imaging*; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed