1. Department of Restorative Dentistry, Periodontology Endodontology and Preventive and Pediatric Dentistry University Medicine Greifswald Greifswald Germany
2. Health Care Research and Epidemiology Institute of German Dentists (IDZ) Cologne Germany
3. Department of Periodontics, Preventive and Restorative Dentistry Center for Dental and Oral Medicine, University Medical Center Hamburg‐Eppendorf Hamburg Germany
4. Shanghai PerioImplant Innovation Centre, Department of Oral and Maxillofacial Implantology Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Centre for Stomatology Shanghai China
5. National Clinical Research Centre for Oral Diseases Shanghai China
6. Shanghai Key Laboratory of Stomatology Shanghai China
7. Department of Dental Clinical Specialties, ETEP Research Group, Faculty of Odontology University Complutense of Madrid Madrid Spain
8. Department of Periodontics and Oral Medicine The University of Michigan‐School of Dentistry Ann Arbor Michigan USA
9. Department of Periodontology, Operative and Preventive Dentistry University of Bonn Bonn Germany
10. Institute for Community Medicine, University Medicine Greifswald Greifswald Germany
11. Department of Oral Diagnostics Digital Health and Health Services Research, Charité, Universitätsmedizin Berlin Berlin Germany
12. Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences College of Dental Medicine, Columbia University New York New York USA