1. Dutch Institute for Rational Use of Medicine Utrecht The Netherlands
2. Department of PharmacoTherapy, ‐Epidemiology & ‐Economics (PTEE), Groningen Research Institute of Pharmacy, Faculty of Science and Engineering University of Groningen Groningen The Netherlands
3. Nivel, Netherlands Institute for Health Services Research Utrecht The Netherlands
4. Division of Pharmacoepidemiology & Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences (UIPS) Utrecht University Utrecht The Netherlands