Affiliations

• ¹ a Department of Neurosurgery , Brain Research Institute, Niigata University , Niigata , Japan.
• ² b Laboratory of Molecular Target Therapy for Cancer , Graduate School for Medical Science, Kyoto Prefectural University of Medicine , Kyoto , Japan.
• ³ c Department of Neurosurgery , Kitanihon Neurosurgical Hospital , Gosen , Japan.
• ⁴ d Department of Neurosurgery , Shibata Prefectural Hospital , Shibata , Japan.
• ⁵ e Department of Neurosurgery , Toyama Prefectural Central Hospital , Toyama , Japan.
• ⁶ f Department of Neurosurgery , Nagano Red Cross Hospital , Nagano , Japan.
• ⁷ g Department of Neurosurgery , Uonuma-Kikan Hospital , Minamiuonuma , Japan.
• ⁸ h Department of Neurosurgery , Niigata Prefectural Central Hospital , Joetsu , Japan.
• ⁹ i Center for Comprehensive Community Medicine, Faculty of Medicine , Saga University , Saga , Japan.
• ¹⁰ j Department of Pathology , Brain Research Institute, Niigata University , Niigata , Japan.