1. Section for Drug Abuse Research, Dept. of Forensic Sciences, Division of Laboratory Medicine Oslo University Hospital Oslo Norway
2. Department of Pharmaceutical Biosciences, School of Pharmacy, Faculty of Mathematics and Natural Sciences University of Oslo Norway
3. Institute of Basic Medical Sciences, Faculty of Medicine University of Oslo Norway
4. Institute of Clinical Medicine, Faculty of Medicine University of Oslo Norway
5. Division of Health Data and Digitalization Norwegian Institute of Public Health Oslo Norway