Okumura Toshikatsu, Ohhira Masumi, Kumei Shima, Nozu Tsukasa
Department of General Medicine, Asahikawa Medical University, Asahikawa, Japan.
Department of Regional Medicine and Education, Asahikawa Medical University, Asahikawa, Japan.
Am J Gastroenterol. 2014 Feb;109(2):292-3. doi: 10.1038/ajg.2013.372.