1. Department of Radiology Guy's & St Thomas' Hospitals NHS Foundation Trust London UK
2. Department of Neuroradiology Kings College Hospital NHS Trust Denmark Hill, London UK
3. Lithuanian University of Health Sciences, Kaunas Clinics Kaunas Lithuania
4. Department of Otolaryngology Guy's & St Thomas' Hospitals NHS Foundation Trust London UK
5. School of Biomedical Engineering & Imaging Sciences Clinical Academic Group, King's College London UK