1. Department of Conservative Dentistry, Translational Health Economics Group (THE Group) Heidelberg University Heidelberg Germany
2. Division of Clinical Epidemiology and Aging Research German Cancer Research Center (DKFZ) Heidelberg Germany
3. Institute of Medical Biometry and Informatics (IMBI) Heidelberg University Hospital Heidelberg Germany
4. Schumpeter School of Business and Economics University of Wuppertal Wuppertal Germany
5. Department of Quality and Safety of Oral Health Care Radboud University Nijmegen Nijmegen The Netherlands