1Dept of Public and Occupational Heatlh, and Institute for Research in Extramural Medicine, VU University Medical Center, Amsterdam, The Netherlands.
2Roessingh Research and Development, Enschede, Netherlands
3Department of Public and Occupational Health, VU University Medical Center, Amsterdam, Netherlands
4Institute for Fundamental and Clinical Human Movement Sciences, Faculty of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
5Public and occupational health