1. Department of Periodontics University of Iowa College of Dentistry Iowa City Iowa USA
2. Division of Periodontology, Department of Oral Medicine, Infection, and Immunity Harvard School of Dental Medicine Boston Massachusetts USA
3. Private Practice Madrid Spain
4. The Avenues Company Flagstaff Arizona USA
5. Department of Periodontics and Oral Medicine School of Dentistry University of Michigan Ann Arbor Michigan USA
6. Evidence‐Based Hub Interdisciplinary Research Center Egas Moniz (CiiEM) Caparica Almada Portugal
7. Graduate Dentistry Program, School of Dentistry Ibirapuera University São Paulo Brazil
8. Unit of Basic Oral Investigation (UIBO) Universidad El Bosque Bogota Colombia
9. Department of Periodontology University of Tennessee Health Science Center (UTHSC) Memphis Tennessee USA
10. Department of Periodontology University of Alabama at Birmingham (UAB) Birmingham Alabama USA
11. American Academy of Periodontology Chicago Illinois USA
12. Department of Periodontology Virginia Commonwealth University Richmond Virginia USA
13. Private Practice Victoria Texas USA
14. Private Practice Chicago Illinois USA
15. International University of Catalonia, Department of Periodontology Barcelona Spain
16. Private Practice Boston Massachusetts USA
17. Department of Periodontics University of Texas Health Science Center San Antonio Texas USA
18. Department of Periodontics School of Dental Medicine Rutgers University Newark New Jersey USA
19. Private Practice Yardley Pennsylvania and New York, New York USA
20. University of Texas School of Dentistry at Houston Houston Texas USA
21. Private Practice Houston Texas USA
22. Private Practice Fenton Michigan USA