Correspondence to Dr Markus Waldén, Division of Community Medicine, Department of Medical and Health Sciences, Linköping University, Linköping 581 83, Sweden; markus.walden{at}telia.com Background ...
3 Division of Community Medicine, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden Correspondence to Martin Hägglund, Division of Physiotherapy, Department of Medical ...