Toyoda Hidenori, Kumada Takashi, Kiriyama Seiki, Sone Yasuhiro, Tanikawa Makoto, Hisanaga Yasuhiro, Hayashi Kazuhiko, Honda Takashi, Kuzuya Teiji, Nonogaki Koji, Shimizu Jun-Ichi
J Gastroenterol Hepatol. 2005 Jun;20(6):963-5. doi: 10.1111/j.1440-1746.2005.03841.x.