1. Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University (TMDU), Japan
2. Department of Cardiovascular Medicine, Tokyo Medical and Dental University (TMDU), Japan
3. Department of Radiology, Tokyo Medical and Dental University (TMDU), Japan
4. Department of Pathology, Tokyo Medical and Dental University (TMDU), Japan
5. Department of Clinical Oncology, Tokyo Medical and Dental University (TMDU), Japan