1. Departments of Neurosurgery, Fukushima Medical University, Fukushima City, Fukushima, Japan
2. Biochemistry, Fukushima Medical University, Fukushima City, Fukushima, Japan
3. Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center, RIKEN Global Research Cluster, Wako, Saitama, Japan
4. Department of Neurosurgery, Juntendo University, Tokyo, Japan
5. Departments of Blood Transfusion and Transplantation Immunology, Fukushima Medical University, Fukushima City, Fukushima, Japan
6. Forensic Medicine, Fukushima Medical University, Fukushima City, Fukushima, Japan
7. Human Life Science, Fukushima Medical University, Fukushima City, Fukushima, Japan