1. Department of Health Sciences, Faculty of Science and Amsterdam Movement Sciences Research Institute; Vrije Universiteit Amsterdam; Amsterdam Netherlands
2. Department of Health Sciences, Faculty of Science; Vrije Universiteit Amsterdam; Amsterdam Netherlands
3. Department of Community Health & Epidemiology; Dalhousie University; Halifax Canada
4. Department of General Practice; Erasmus Medical Center; Rotterdam Netherlands
5. Center for Muscle and Health; University of Southern Denmark; Odense Denmark
6. Department Physiotherapy & Occupational Therapy; Aarhus University Hospital; Aarhus Denmark