1. Evidence‐based health services research Institute for Research in Operative Medicine (IFOM) Witten/Herdecke University Cologne Germany
2. Faculty of Health Sciences Brandenburg, Brandenburg Medical School (Theodor Fontane), Institute for Health Services and Health System Research Rüdersdorf Germany
3. Center for Health Services Research, Brandenburg Medical School (Theodor Fontane) Rüdersdorf Germany
4. Faculty of Health, Department of Clinical Pharmacology School of Medicine, University Witten/Herdecke Witten Germany
5. Department for General and Family Medicine Center for Public Health, Medical University of Vienna Vienna Austria
6. Institute for Medical Statistics University Medical Center, Göttingen Germany
7. Research Initiative Health for Austria Vienna Austria
8. Philipp Klee‐Institute of Clinical Pharmacology Helios University Hospital Wuppertal, University Witten/Herdecke Witten Germany
9. Faculty of Health Department of Clinical Pharmacology, School of Medicine University Witten/Herdecke Witten Germany