1. Department of Medicine, Sorlandet Hospital Kristiansand, Kristiansand, Norway2Institute of Health and Society, University of Oslo, Oslo, Norway3Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts4Department of Biostatistics,
2. Institute of Health and Society, University of Oslo, Oslo, Norway3Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts4Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts5Harvard-MIT Division o
3. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts4Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts5Harvard-MIT Division of Health Sciences and Technology, Boston, Boston, Massachusetts
4. Institute of Health and Society, University of Oslo, Oslo, Norway
5. Department of Pathology, Oslo University Hospital, Oslo, Norway
6. School of Pharmacy, University of Oslo, Norway
7. Department of Pharmacology and Clinical Neuroscience, Clinical Pharmacology Unit, Umeå University, Umeå, Sweden
8. Department of Oncology, Oslo University Hospital, Oslo, Norway
9. Institute of Health and Society, University of Oslo, Oslo, Norway7Telemark Hospital Skien, Skien, Norway13Cancer Registry of Norway, Oslo, Norway