1. Centre for Musculoskeletal Research, Department of Occupational and Public Health Sciences, University of Gävle, Gävle, Sweden
2. TNO, Leiden, the Netherlands
3. Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, MOVE Research Institute Amsterdam, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
4. Institute of Occupational and Social Medicine and Health Services Research, University Hospital, Faculty of Medicine, Eberhard Karls University, Wilhelmstraβe 27, 72074 Tübingen, Germany
5. Department of BioMechanical Engineering, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Delft, the Netherlands