Dr. Murakami et al reply

K. Murakami, MD, Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo.

J. Arai, MD, PhD, Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo; Department of Gastroenterology, The Institute of Medical Science, Asahi Life Foundation, Nihonbashibakurocho 2-2-6, Chuo-ku, Tokyo, Japan.

S. Ihara, MD, PhD, Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo.

M. Fujishiro, MD, PhD, Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo 7-3-1, Bunkyo-ku, Tokyo; Department of Gastroenterology, The Institute of Medical Science, Asahi Life Foundation, Nihonbashibakurocho 2-2-6, Chuo-ku, Tokyo, Japan.