1. Department of Epidemiology; Erasmus MC - University Medical Center Rotterdam; Rotterdam
2. Department of Internal Medicine; Erasmus MC - University Medical Center Rotterdam; Rotterdam
3. Department of Medical Informatics; Erasmus MC - University Medical Center Rotterdam; Rotterdam
4. Inspectorate of Health Care; Utrecht
5. Apotheek Haagse Ziekenhuizen - HAGA; The Hague the Netherlands