1. Department of Research, Cancer Registry of Norway, Oslo, Norway
2. Department of Medicine – Solna, Karolinska Institutet, Centre for Pharmacoepidemiology, Solna, Sweden
3. Clinical Pharmacology, Department of Laboratory Medicine, Karolinska Institutet, Huddinge, Sweden
4. Regional Cancer Centre Central Sweden, Uppsala, Sweden
5. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Solna, Sweden
6. Cancer Theme, Karolinska University Hospital, Solna, Sweden