1. Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; Ann Arbor MI
2. Department of Oral Surgery and Stomatology; ZMK School of Dentistry; Bern CH
3. Department of Periodontology; Universitat Internacional de Catalunya; Barcelona Spain
4. Department of Oral and Maxillofacial Surgery; Universitat Internacional de Catalunya; Barcelona Spain
5. Department of Oral Surgery; Universitat de Valencia; Valencia Spain
6. INSERM UMR-1229 RMeS; Faculty of Dental Surgery; University of Nantes; Nantes France
7. Institute for Biological Research “Sinisa Stankovic”; University of Belgrade; Belgrade Serbia