1. Department of Medicine Solna Center for Pharmacoepidemiology Karolinska Institutet Stockholm Sweden
2. Department of Global Public Health and Primary Care University of Bergen Bergen Norway
3. Department of Chronic Diseases and Ageing Norwegian Institute of Public Health Oslo Norway
4. Department of Clinical Biochemistry and Pharmacology Odense University Hospital Odense Denmark
5. Department of Clinical Research University of Southern Denmark Odense Denmark
6. Center for Fertility and Health Norwegian Institute of Public Health Oslo Norway
7. Department of Laboratory Medicine Clinical Pharmacology Karolinska Institutet Stockholm Sweden