1 From Department of Neurosurgery, Nagasaki University School of Medicine, Japan (T.F., Y.M., N.H., T.I., K.H., T.M.); Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan (H.K.); and Department of Neurosurgery, Kokura Memorial Hospital, Kitakyushu, Japan (I.N.).
2 From Department of Neurosurgery, Nagasaki University School of Medicine, Japan (T.F., Y.M., N.H., T.I., K.H., T.M.); Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Japan (H.K.); and Department of Neurosurgery, Kokura Memorial Hospital, Kitakyushu, Japan (I.N.). yoichi51@hotmail.com.