1. Department of Obstetrics and Gynecology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
2. Department of Cancer Genome Research Sasaki Institute Tokyo Japan
3. Division of Pathology Niigata University Medical and Dental Hospital Niigata Japan
4. Division of Oral Pathology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
5. Division of Molecular and Diagnostic Pathology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
6. Department of Pediatrics Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
7. Division of bioinformatics Niigata University Graduate School of Medical and Dental Sciences Niigata Japan