- Correspondence to Professor H Alfredson, Department of Surgical and Perioperative Sciences, Sports Medicine, University of Umeå, S-901 87 Umeå, Sweden;
- Accepted July 24, 2008
- First published October 16, 2008.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.