1. From the Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan (K.H., H.S.); Division of Clinical Research Administration, Hokkaido University Hospital, Sapporo, Japan (H.S.); Department of Neurology, Okayama University Medical School, Japan (K.A., T. Yamashita); Hokkaido University Hospital Clinical Research and Medical Innovation Center, Sapporo, Japan (T.A., N.S.); Department of Stem Cell Biology and Histology, Tohoku University Graduate School of Medicine,...