1. Department of Neuroendovascular Therapy, Japan Community Healthcare Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
2. Department of Neurosurgery, Japan Community Healthcare Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
3. Department of Cardiology, Tomishiro Central Hospital, Tomigusuku, Okinawa, Japan
4. Department of Neurology, Saiseikai Shiga Hospital, Ritto, Shiga, Japan
5. Department of Neurology and Stroke Treatment, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Kyoto, Japan