1. Tokyo Metropolitan University,Graduate School of System Design,Department of Electrical Engineering and Computer Science,Hachioji, Tokyo,Japan,192-0397
2. The University of Tokyo Hospital,Translational Research Center,Biodesign Department,Tokyo,Japan,113-8655
3. National Cancer Center Hospital East,Department of Gastroenterology and Endoscopy,Kashiwa, Chiba,Japan,277-8577