- Correspondence to Dr Lars Engebretsen, Oslo Sports Trauma Research Center, Sognsveien 220, PB 4014 Ullevaal Stadion, 0806, Oslo, Norway;
- Accepted January 14, 2011
- First published February 25, 2011.
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.