1. Department of Environmental Sciences University of Basel Basel Switzerland
2. Basel Academy for Quality and Research in Medicine Basel Switzerland
3. Center for Dental Medicine Medical Center – University of Freiburg Freiburg Germany
4. Hannover Medical School Department of Conservative Dentistry, Periodontology and Preventive Dentistry Hannover Germany
5. Section Cariology, Department for Operative Dentistry, Endodontics, and Pediatric Dentistry Philipps‐University Marburg Marburg Germany