1. Departments of Neurosurgery Graduate School of Medicine Yokohama City University KanagawaJapan
2. Gastroenterology and Hepatology Graduate School of Medicine Yokohama City University KanagawaJapan
3. Clinical Cancer Genomics Graduate School of Medicine Yokohama City University KanagawaJapan
4. Gastroenterology Yokohama City University KanagawaJapan
5. Department of Microbiology School of Medicine Yokohama City University KanagawaJapan
6. Life Science Laboratory, Technology and Development Division Kanto Chemical Co., Inc. Kanagawa Japan