1 Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland. Electronic address: hanna.rajantie@icloud.com.
2 Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
3 Department of Neurosurgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
4 Department of Oral and Maxillofacial Surgery, University of Turku, Department of Oral and Maxillofacial Diseases, Turku University Hospital, Turku, Finland.