1. Occupational and Environmental Medicine, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
2. Inflammatory Response and Infection Susceptibility Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
3. Man-Technology-Environment (MTM) Research Center, School of Science and Technology, Örebro University, Örebro, Sweden
4. Now with Wellington Laboratories Inc, Guelph, Ontario, Canada
5. Cardiovascular Epidemiology, Department of Medical Sciences, Uppsala University, Uppsala, Sweden