1. Service de Neuroradiologie Diagnostique et Therapeutique, Hospital de Bicêtre, Paris, France;
2. Department of Neurosurgery, Osaka City University Graduate School of Medicine, Osaka, Japan;
3. Division of Neurosurgery, Department of Surgery, Siriraj Hospital, Mahidol University; and
4. Department of Radiology, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand