1. Department of Neurosurgery, Kyoto University Graduate School of Medicine, Japan (N.S., A.I., H.N., R.A., M.O., Y.A., H.T., S.M.).
2. Department of Biobased Materials Science, Kyoto Institute of Technology, Japan (S.Y., S.S.).
3. RADIS Lab, Research in Cerebral Vascular Diseases, Division of Neurosurgery, St. Michael’s Hospital, Toronto, Ontario, Canada (H.N.).