1. Department of PharmacoTherapy, ‐Epidemiology and ‐Economics Groningen Research Institute of Pharmacy, University of Groningen Groningen The Netherlands
2. Groningen Research Institute for Asthma and COPD (GRIAC) University Medical Center Groningen, University of Groningen Groningen Netherlands
3. Department of Clinical Pharmacy and Pharmacology University Medical Center Groningen, University of Groningen Groningen The Netherlands
4. Department of Epidemiology University Medical Center Groningen, University of Groningen Groningen The Netherlands