Department of Gastroenterology and Hepatology Yokohama City University Graduate School of Medicine Yokohama Japan;
Department of Gastroenterology and Hepatology Yokohama City University Graduate School of Medicine Yokohama Japan;
Department of Gastroenterology and Hepatology Yokohama City University Graduate School of Medicine Yokohama Japan;
Department of Gastroenterology and Hepatology Yokohama City University Graduate School of Medicine Yokohama Japan;