1 Oral Medicine Department, Guy's and St. Thomas Hospital NHS Foundation Trust, King's College London, London, UK.
2 Department of Oral Diagnostic Sciences, Faculty of Dentistry, King AbdulAziz University, Jeddah, Saudi Arabia.
3 Division of Oral Medicine, Department of Diagnostic Sciences, Tufts School of Dental Medicine, Boston, MA, USA.
4 Department of Diagnostic Sciences, Center for Temporomandibular Disorders and Orofacial Pain, Rutgers School of Dental Medicine, The State University of New Jersey, Newark, NJ, USA.
5 Department of Diagnostic Sciences, School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, LA, USA.
6 College of Medicine and Dentistry, James Cook University, Cairns, Queensland, Australia.
7 Metro South Oral Health, Brisbane, Queensland, Australia.
8 Department of Oral and Maxillofacial Medicine and Diagnostic Sciences, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA.
9 Department of Biomedical, Surgical and Dental Sciences, Unit of Oral Medicine, Oral Pathology and Gerodontology, University of Milan, Milan, Italy.
10 Orofacial Pain Clinic, College of Dentistry, University of Kentucky, Lexington, KY, USA.
11 Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, USA.
12 College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA.
13 Department of Oral Surgery, School of Dentistry, University of Liverpool, Liverpool, UK.
14 Oral Medicine Department, Guy's and St. Thomas Hospital NHS Foundation Trust, King's College London, London, UK. rui.albuquerque@gstt.nhs.uk.
15 Department of Oral Medicine, Faculty of Dentistry, Oral Craniofacial Sciences, King's College London, Floor 22, Guy's Tower, London, SE1 9RT, UK. rui.albuquerque@gstt.nhs.uk.