1. Department of Orofacial Pain and Dysfunction Academic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam and Vrije Universiteit Amsterdam Amsterdam The Netherlands
2. Department of Oral and Maxillofacial Diseases University of Helsinki Helsinki Finland
3. Department of Neurosciences, School of Dentistry University of Padova Padova Italy
4. Department of Biomedical Technologies, School of Dentistry University of Siena Siena Italy