title: Reviewer's comment.
authors.affiliation: Orthopädische Universitätsklinik Bochum, St. Josef-Hospital, 44791, Germany.
authors.forename: R H
authors.initials: RH
authors.lastname: Wittenberg
mesh_terms: D001863:Bone Screws; D006801:Humans; D013123:Spinal Fusion; D013813:Therapy, Computer-Assisted