1. Interventional Neuroradiology Research Unit, Department of Radiology, Université de Montréal, CHUM Notre-Dame Hospital, Montreal; Canada;
2. Department of Neuroradiology, Western General Hospital, Edinburgh; United Kingdom;
3. Department of Neurological surgery, Cleveland Clinic, Ohio; USA;
4. Department of Neuroradiology, Alfred-Krupp-Krankenhaus, Essen; Germany;
5. Service de Neuroradiologie Diagnostique et Thérapeutique, Hôpital Neurologique - CHU Nancy; France;
6. Department of Radiology, Mayo Clinic, Rochester, MN; USA