1. National Research Centre for the Working Environment, Copenhagen, Denmark
2. Centre for Ergonomics, Occupational Safety and Health, Massey University, Palmerston North, New Zealand
3. Department of Occupational Medicine, Copenhagen University Hospital Holbæk, Denmark
4. Department of Nutrition, Exercise and Sports, University of Copenhagen, Denmark
5. Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
6. Occupational and Environmental Medicine, University Hospital, Odense, Denmark