1. School of Dentistry, University of Leeds, Leeds, UK
2. Department of Social Dentistry, Academic Centre for Dentistry Amsterdam, Vrije Universiteit University, and University of Amsterdam, Amsterdam, the Netherlands
3. Aridhia Informatics Ltd., Hobart House, Edinburgh, Scotland
4. Department of Conservative Dentistry, Translational Health Economics Group, Heidelberg University, Heidelberg, Germany
5. Department of Quality and Safety of Oral Healthcare, Radboud University, Radboud UMC, Nijmegen, the Netherlands