From the National Cardiovascular Center (T.Y., K.M.), Osaka, Japan; Tohoku University Graduate School of Medicine (E.M.), Miyagi, Japan; Nakamura Memorial Hospital (J.N.), Hokkaido, Japan; Pacific Neurosurgical Consulting (K.H.) Hokkoido, Japan; Fuji Brain Institute and Hospital (I.S.), Shizuoka, Japan; and Tokai University Tokyo Hospital (Y.S.), Tokyo, Japan. (2006-07時点)
