1. Mammalian Genetics Laboratory, Genetic Strains Research Center, National Institute of Genetics
2. Department of Coloproctological Surgery, Juntendo University, School of Medicine
3. Departments of Neurosurgery, Juntendo University, Shizuoka Hospital
4. Departments of Surgery, Juntendo University, Shizuoka Hospital
5. Departments of Pathology, Juntendo University, Shizuoka Hospital