Affiliation: | 1. Department of Pharmacoepidemiology, Norwegian Institute of Public Health, Oslo, Norway;2. Centre of Public Health Sciences, Faculty of Medicine, University of Iceland Reykjavik, Reykjavik, Iceland;3. Research Department, The Social Insurance Institution, Helsinki, Finland;4. Centre for Pharmacoepidemiology, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden;5. Clinical Pharmacology, Department of Public Health, University of Southern Denmark, Funen, Denmark |