1. Department of Periodontology School of Graduate Dentistry Faculty of Medicine Technion (I.I.T.) Rambam health care campus Haifa Israel
2. Division of Periodontology Department of Oral Medicine Infection and Immunity Harvard School of Dental Medicine Harvard University Boston Massachusetts USA
3. Department of Periodontology School of Dental Medicine Stony Brook New York USA
4. Division of Periodontics Section of Oral Diagnostic and Rehabilitation Sciences College of Dental Medicine Columbia University New York USA
5. Department of Periodontics and Oral Medicine University of Michigan School of Dentistry Ann Arbor Michigan USA
6. Department of Periodontics Justus‐Liebig University Giessen & Avadent Bad Homburg Germany
7. Department of Periodontology Tufts University School of Dental Medicine Boston Massachusetts USA
8. Center for Oral Clinical Research Barts & The Royal London School of Medicine and Dentistry Institute of Dentistry Queen Mary University of London (QMUL) London UK
9. Department of Periodontology the Hebrew University‐Hadassah Faculty of Dental Medicine Jerusalem Israel
10. Central Texas Veterans Health Care System Texas USA
11. Department of Advanced Oral Sciences and Therapeutics School of Dentistry University of Maryland Maryland USA
12. Division of Oral Medicine Tufts University School of Dental Medicine Boston Massachusetts USA