Muguruma N, Okamura S, Okahisa T, Shibata H, Ito S, Terauchi A
Second Department of Internal Medicine, School of Medicine, University of Tokushima, and Saito Hospital, Tokushima, Japan.
Gastrointest Endosc. 1999 May;49(5):653-4. doi: 10.1016/s0016-5107(99)70401-3.