1. School of Health Sciences, Jönköping University, 551 11 Jönköping, Sweden
2. Institute of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
3. Department of Psychology, Umeå University, 901 87 Umeå, Sweden
4. Stress Research Institute, Stockholm University, 106 91 Stockholm, Sweden
5. Department of Internal Medicine, County Hospital Ryhov, 551 85 Jönköping, Sweden
6. Department of Health Sciences, Mid Sweden University, 851 70 Sundsvall, Sweden
7. Occupational and Environmental Medicine, Uppsala University, 751 85 Uppsala, Sweden