1. Department of Oral and Maxillofacial Diseases University of Helsinki Helsinki Finland
2. Institute for Molecular Medicine Finland FIMM HiLIFEUniversity of Helsinki Helsinki Finland
3. Department of Orofacial pain and Dysfunction Academic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam and Vrije Universiteit Amsterdam Amsterdam The Netherlands
4. School of Dentistry Department of Biomedical Technologies University of Siena Siena Italy
5. Finnish Institute of Occupational Health Helsinki Finland
6. Department of Public Health Faculty of Medicine University of Helsinki Helsinki Finland