1. Department of Medical Biotechnologies, School of Dentistry University of Siena Siena Italy
2. Department of Oral and Maxillofacial, Diseases University of Helsinki Helsinki Finland
3. Faculty of Dental Medicine Center for Advance Research in Sleep Medicine, Université de Montréal & CIUSSS Nord Ile de Montréal Montréal Québec Canada
4. Section for Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health Aarhus University Aarhus Denmark
5. Faculty of Odontology Malmö University Malmö Sweden
6. Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam and Vrije Universiteit Amsterdam Amsterdam The Netherlands