1. Clinical Pharmacology and Pharmacy; Department of Public Health; University of Southern Denmark; Odense Denmark
2. Danish Cancer Society Research Center; Danish Cancer Society; Copenhagen Denmark
3. Department of Public Health; University of Copenhagen; Copenhagen Denmark
4. Department of Epidemiology; Gillings School of Global Public Health; University of North Carolina at Chapel Hill; Chapel Hill NC USA
5. Department of Clinical Biochemistry and Pharmacology; Odense University Hospital; Odense Denmark
6. Department of Medicine; Centre for Pharmacoepidemiology; Solna, Karolinska Institutet; Stockholm Sweden
7. Clinical Epidemiology Unit; Department of Medicine; Solna, Karolinska Institutet; Stockholm Sweden