1. Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
2. Injury Epidemiology and Prevention Research Group, Turku Brain Injury Centre, Division of Clinical Neurosciences, Turku University Hospital and University of Turku, Turku, Finland
3. Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany
4. Department of Oral and Maxillofacial Surgery, Institute of Dentistry, University of Turku, Turku, Finland
5. Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland, Finland