1. Department of Orofacial Pain and Jaw Function; Faculty of Odontology; Malmö University; Malmö Sweden
2. Oral, Dental and Maxillofacial Sciences; Section of Orthodontics and Clinical Gnathology; University of Naples Federico II; Naples Italy
3. Department of Oral Diagnostic Sciences; University at Buffalo; Buffalo NY USA
4. Department of Rehabilitation Medicine; Skåne University Hospital; Lund Sweden