Malmvik, Johan; Herbertsson, Pär; Josefsson, Per Olof; Hasserius, Ralph; Besjakov, Jack; Karlsson, Magnus K.
Department of Orthopaedics and Radiology, University Hospital UMAS, Malmo, Sweden
Sponsorship: This study received financial support from the Osterlund, Herman Jarnhardt, Malmo and Lund University Foundations.
Correspondence and requests for reprints to Magnus Karlsson, Department of Orthopaedics, Malmö University Hospital, SE-205 02 Malmo, Sweden.
Tel: +46 40 331000; fax: +46 40 336200