1. Department of Oral and Maxillofacial Surgery; Ludwig-Maximilians-University of Munich; Munich Germany
2. Division of Oral and Maxillofacial Surgery; University of Miami, Miller School of Medicine; Miami FL USA
3. Department of Oral and Maxillofacial Surgery; University of Heidelberg; Heidelberg Germany
4. Department of Oral and Maxillofacial Surgery; University of Mainz; Mainz Germany
5. Department of Oral and Maxillofacial Surgery; Horst-Schmidt-Klinikum; Wiesbaden Germany
6. University College London; UCL Eastman Dental Institute; London United Kingdom
7. University and Hospital Trust of Verona, Department of Surgery; Section of Oral and Maxillofacial Surgery; Verona Italy
8. University of Palermo, Department of Surgical; Oncological, and Oral Sciences, Sector of Oral Medicine; Palermo Italy
9. Hospital “SS. Antonio, Biagio and C. Arrigo”, Department of Oncology and Hematology; Unit of Medical Oncology; Alessandria Italy
10. Department of Oral and Maxillofacial Surgery; Baskent University, Faculty of Dentistry; Ankara Turkey
11. Department of Oral and Maxillofacial Surgery; University of Alexandria; Alexandria Egypt
12. Department of Oral Surgery and Oral Medicine; Faculty of Dentistry, University of Oslo; Oslo Norway
13. Department of Oral and Maxillofacial Surgery; School of Dentistry, Kyungpook National University; Daegu Korea
14. University College London, UCL Eastman Dental Institute, and NIHR University College London Hospitals; Biomedical Research Centre; London United Kingdom