1. Department of Neurosurgery, Banbuntane Hotokukai Hospital, Fujita Health University, Nagoya, Japan
2. Department of Neurosurgery, Andhra Medical College, Maharanipeta, Visakhapatnam, India
3. Department of Neurosurgery, Sogo Shinkawabashi Hospital, Kawasaki-city, Japan
4. Department of Surgery, Hospital of Slovak Railways, Kosice, Slovakia
5. Department of Neurosurgery, Fuchu Keijinkai Hospital, Tokyo, Japan
6. Normal Pressure Hydrocephalus Center, Chiba Kashiwa Tanaka Hospital, Kashiwa city, Japan
7. Department of Neurosurgery, Japanese Red Cross Asahikawa Hospital, Asahikawa, Japan
8. Department of Neurosurgery, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic