1. Department of Quality and Safety of Oral Health Care; Radboud University Nijmegen; Nijmegen The Netherlands
2. Department of Conservative Dentistry; Translational Health Economics Group (THE Group); Heidelberg University; Heidelberg Germany
3. Sir John Walsh Research Institute; Faculty of Dentistry; University of Otago; Dunedin New Zealand
4. Institute of Medical Biometry and Informatics; Heidelberg University; Heidelberg Germany
5. Newcastle upon Tyne; Newcastle University; Newcastle UK
6. Department of Epidemiology and Public Health; University College London; London UK
7. Australian Research Centre for Population Oral Health (ARCPOH); University of Adelaide; Adelaide SA Australia
8. Department of Social Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University Amsterdam; Amsterdam Netherlands
9. Schumpeter School of Business and Economics; University of Wuppertal; Wuppertal Germany