1. Department of Orthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.
2. Medical Radiation Physics, Department of Translational Medicine, Lund University, Skåne University Hospital, Malmö, Sweden.
3. Department of Orthodontics, Al-Jahra Specialty Dental Center, Ministry of Health, Kuwait, Sweden.
4. Department of Oral and Maxillofacial Radiology, Faculty of Odontology, Malmö University, Malmö, Sweden.