1. Department of Oral and Maxillofacial Surgery, Plastic Operations, University Medical Center Mainz, 55131 Mainz, Germany
2. Second Dental Clinic, Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, National Clinical Research Center for Oral Disease, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
3. Center for Epidemiology and Surveillance of Oral Diseases (CESOD), Faculty of Dentistry, Universidad de Chile, Santiago 8380420, Chile
4. Postgraduate School, Faculty of Dentistry, Universidad de Chile, Santiago 8380420, Chile
5. Department of Implantology and Maxillofacial Surgery, Vithas Davó Instituto Dental, 03016 Alicante, Spain
6. School of Dental Medicine, University of Belgrade, 11000 Belgrade, Serbia