- Correspondence to M Hägglund Department of Medical and Health Sciences, Division of Physiotherapy, Linköping University, Linköping 58183, Sweden;
- Accepted May 15, 2015
- First published June 5, 2015.
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.