Media type: E-Article Title: Letters to the Editor Contributor: Oberndorfer, Stefan; Grisold, Wolfgang imprint: Ovid Technologies (Wolters Kluwer Health), 2000 Published in: Spine Language: English DOI: 10.1097/00007632-200003010-00021 ISSN: 0362-2436 Keywords: Neurology (clinical) ; Orthopedics and Sports Medicine Origination: Footnote: