Authors: K Fujiwara; I Ogata; Y Sato; T Tomiya; Y Ohta; Y Oka; S Nagoshi; S Yamada; N Masaki; K Takatsuki Journal: Dig Dis Sci Date: 1991-06 Impact factor: 3.199
Authors: H Sugimoto; S Sakurai; T Abe; H Takagi; H Takahashi; J Takezawa; T Nagamine; S Matsuzaki Journal: J Gastroenterol Date: 1994-04 Impact factor: 7.527