Bjørgen Siri, Jessen Vigleik, Husby Otto Schnell, Røset Øyvind, Foss Olav A
Orthopaedic Research Centre, St. Olavs Hospital and Department of Neuroscience, Norwegian University of Science and Technology, Norway.
Tidsskr Nor Laegeforen. 2012 Mar 27;132(6):626-7. doi: 10.4045/tidsskr.11.0852.