[1
]
Resident, PhD Student, Department of Oral and Maxillofacial Surgery, Aalborg University
Hospital, Aalborg, Denmark.
[2
]
Consultant, Department of Oral and Maxillofacial Surgery, Public Health Service, Gävle,
Sweden Centre for Research and Development, Uppsala University/Gävleborg County Council,
Gävleborg, Sweden.
[3
]
Consultant, Associate Professor, Department of Oral and Maxillofacial Surgery, Public
Health Service, Gävle, Sweden.
[4
]
Biostatistician, Unit of Epidemiology and Biostatistics, Aalborg University Hospital,
Aalborg, Denmark.
[5
]
Professor, Consultant, Department of Oral and Maxillofacial Surgery, Aalborg University
Hospital, Denmark.