1Periodontal Research Group, Institute of Clinical Sciences, College of Medical & Dental Sciences, University of Birmingham, UK
2University of Texas Health Science Center at San Antonio USA
3The Forsyth Institute, Cambridge, MA, USA
4School of Dentistry, University of Adelaide,, Australia
5Department of Periodontology and Synoptic Dentistry Charité - Universitätsmedizin Berlin Germany
6Department of Periodontology, Center for Oral Medicine, Johann Wolfgang Goethe-University Frankfurt, Germany
7Department of Periodontology, University of Alabama at Birmingham, USA
8Department of Oral Biology, SUNY at Buffalo, NY, USA
9Faculty of Dentistry, University of Toronto, Canada
10Department of Periodontology, Faculty of Dental Medicine, Hebrew University-Hadassah Medical Center, Jerusalem, Israel
11Periodontal Department, Tufts University School of Dental Medicine, Boston, MA, USA
12Periodontology, Section 1, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
13Department of Periodontology, University of Iowa College of Dentistry, Iowa City, IA, USA
14Orofacial Sciences, University of California San Francisco, USA
15Department of Periodontology, University of Bern, Switzerland
16Department of Periodontology, University of Giessen, Germany
17Department of Periodontology, Graduate School of Dentistry, Osaka University, Japan
18Department of Periodontics, Texas A&M College of Dentistry, Dallas, TX, USA
19Division of Periodontology Department of Stomatology Dental School University of São Paulo Brazil
20Division of Periodontology, College of Dentistry, Ohio State University, Columbus, OH, USA
21Department of Oral Health Sciences, Periodontology, KU Leuven & Dentistry, University Hospitals Leuven, Belgium
22Research Center for the Study of Periodontal and Peri-Implant Diseases, University of Ferrara, Italy
23Department of Periodontology, Endodontology & Cariology University Centre for Dental Medicine University of Basel School of Dentistry Switzerland
24Department of Prosthodontics, School of Dentistry, Medical University Graz, Austria
25Orofacial Sciences, School of Dentistry, University of California San Francisco, USA
26Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Japan