1. IMM Institute of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
2. Division of Ergonomics, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 141 57 Huddinge, Sweden
3. Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 171 77 Stockholm, Sweden
4. Department of Clinical Physiology, Karolinska University Hospital, 141 86 Huddinge, Sweden
5. Centre for Occupational and Environmental Medicine, Stockholm County Council, 113 65 Stockholm, Sweden