Kawamura O, Kon Y, Naganuma A, Iwami T, Maruyama H, Yamada T, Sonobe K, Horikoshi T, Kusano M, Mori M
First Department of Internal Medicine, Gunma University School of Medicine, Gunma, Japan.
Gastrointest Endosc. 2001 Apr;53(4):508-10. doi: 10.1067/mge.2001.112746.