1. Division of Physiotherapy and Unit of Neuroepidemiology and Health Services Research, Stockholm, Sweden
2. Unit of Neuroepidemiology and Health Services Research, Division of Neurology, Neurotec Department, Karolinska Institutet, Stockholm, Sweden
3. Unit of Neuroepidemiology and Health Services Research, Division of Neurology, Neurotec Department, Karolinska Institutet and Department of Health and Caring Sciences, Högskolan Dalarna, Falun
4. Division of Physiotherapy and Unit of Neuroepidemiology and Health Services Research, Division of Neurology, Neurotec Department, Karolinska Institutet, Stockholm, Sweden