1 School of Pharmacy University of Oslo and Division of Mental Health Norwegian Institute of Public Health Oslo, Norway h.m.e.nordeng@farmasi.uio.no Department of Obstetrics and Gynecology Drammen Hospital VVHF Drammen, Norway Department of Clinical Pharmacology St Olav's University Hospital Trondheim, Norway Department of Clinical Pharmacology St Olav's University Hospital and Department of Laboratory Medicine Children's and Women's Health Norwegian University of Science and Technology Trondheim, Norway.