1. Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
2. Department of Clinical Chemistry, Karolinska University Hospital, Huddinge, Sweden
3. Department of Occupational and Environmental Medicine, University Hospital, Lund, Sweden
4. Department of Community Health, Malmö University Hospital, Malmö, Sweden
5. Department of Medicine and
6. Department of Gynecology and Obstetrics, University Hospital, Lund, Sweden