1. Department of Medical Sciences: Lung- allergy- and sleep research; Uppsala University; Uppsala Sweden
2. Department of Women's and Children's Health; Uppsala University; Uppsala Sweden
3. Experimental Asthma and Allergy Research Unit; Institute of Environmental Medicine; Karolinska Institute; Stockholm Sweden
4. Department of Women's and Children's Health; Karolinska Institute; Stockholm Sweden
5. Department of Internal Medicine and Clinical Nutrition; Krefting Research Centre; University of Gothenburg; Gothenburg Sweden
6. Section of Occupational and Environmental Medicine; Department of Public Health and Community Medicine; Institute of Medicine; Sahlgrenska Academy at University of Gothenburg; Gothenburg Sweden
7. Department of Public Health and Clinical Medicine; Occupational and Environmental Medicine; University of Umeå; Umeå Sweden
8. Department of Medical Sciences: Clinical Physiology; Uppsala University; Uppsala Sweden