1. Department of Epidemiology, Erasmus MC, Rotterdam, the Netherlands
2. Drug Safety Unit, Inspectorate for Health Care, the Hague, the Netherlands
3. Scientific Institute Dutch Pharmacists, the Hague, the Netherlands
4. The Dutch Medicines Evaluation Board, the Hague, the Netherlands
5. Department of Medical Informatics, Erasmus MC, Rotterdam, the Netherlands
6. Department of Internal Medicine, Erasmus MC, Rotterdam, the Netherlands
7. Department of Hospital Pharmacy, Erasmus MC, Rotterdam, the Netherlands