1 Department of Gastroenterology, Yachiyo Medical Center, Tokyo Women's Medical University, Chiba 276-8524, Japan; Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Chiba 276-8524, Japan. Electronic address: murakami.daisuke_1@twmu.ac.jp.
2 Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Chiba 276-8524, Japan.
3 Department of Gastroenterology, Yachiyo Medical Center, Tokyo Women's Medical University, Chiba 276-8524, Japan.