1 Department of Periodontology and Operative Dentistry, Muenster University Hospital, Albert‑Schweitzer‑Campus 1, Building W30, Münster, 48149, Germany.
2 Institute of Epidemiology and Social Medicine, University of Münster, Münster, Germany.
3 Department of Periodontology and Operative Dentistry, Muenster University Hospital, Albert‑Schweitzer‑Campus 1, Building W30, Münster, 48149, Germany. [email protected].
4 Department of Periodontology, Center for Dentistry and Oral Medicine, Goethe University Frankfurt, Frankfurt, Germany.
5 Department of Periodontology, TU Dresden, Dresden, Germany.
6 Department of Conservative Dentistry, Section of Periodontology, Clinic for Oral, Dental and Maxillofacial Diseases, Heidelberg University Hospital, Heidelberg, Germany.
7 Department of Restorative Dentistry, Periodontology, Endodontology, and Preventive and Pediatric Dentistry, University Medicine Greifswald, Greifswald, Germany.
8 Department of Periodontology, University of Giessen, Giessen, Germany.
9 Departments of Periodontology and Synoptic Dentistry, Charite-Universitätsmedizin Berlin, Berlin, Germany.
10 Department of Periodontology, Dental School, Faculty of Health, University of Witten/Herdecke, Witten, Germany.
11 Department of Periodontology, University Hospital Würzburg, Würzburg, Germany.