1. Department of Clinical Medicine, University of Bergen, Bergen, Norway
2. Department of Neurology, Haukeland University Hospital, Bergen, Norway
3. Department of Clinical Science, University of Bergen, Bergen, Norway
4. Laboratory of Clinical Biochemistry, Section of Clinical Pharmacology, Haukeland University Hospital, Bergen, Norway
5. Department of Clinical Pharmacology, St Olav University Hospital, Trondheim, Norway
6. Department of Laboratory Medicine, Children’s and Women’s Health, Norwegian University of Science and Technology, Trondheim, Norway
7. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
8. Division of Epidemiology, Norwegian Institute of Public Health, Bergen, Norway