1. From the Department of Neurosurgery, Kyoto University, Graduate School of Medicine, Kyoto (T.A., H.K., T.M., R.I., K.N., N.H.); Department of Advanced Clinical Science and Therapeutics, Tokyo University, Graduate School of Medicine, Tokyo (M.S., K.W.); and Department of Clinical Gene Therapy, Osaka University, Graduate School of Medicine, Osaka (H.N., R.M.), Japan.