1. Department of Oral and Maxillofacial Radiology, Faculty of Odontology, Malmö University, Malmö, Sweden
2. Department of Oral Medicine and Radiology, Faculty of Dentistry, Sebha University, Sebha, Libya
3. Christie Medical Physics and Engineering, The Christie NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
4. Faculty of Odontology, Malmö University, Malmö, Sweden