1 Discipline of Orthodontics and Paediatric Dentistry, Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119085, Singapore. denchhl@nus.edu.sg.
2 Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.
3 Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
4 Department of Radiation Oncology, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy.
5 Oral Diagnosis Department, Piracicaba Dental School, University of Campinas, Campinas, Brazil.
6 Department of Clinic and Preventive Dentistry, Federal University of Pernambuco, Recife, Pernambuco, Brazil.
7 Dental Oncology Services, City of Hope Duarte, CA and Cedars-Sinai Health System, Los Angeles, CA, USA.
8 Oral Medicine, Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA.