Authors: S Tsuji; S Kawano; N Sato; N Hayashi; H B Peng; M Tsujii; K Nagano; Y Takei; S S Chen; T Kashiwagi Journal: Endoscopy Date: 1993-05 Impact factor: 10.093
Authors: H Tsukuma; T Hiyama; S Tanaka; M Nakao; T Yabuuchi; T Kitamura; K Nakanishi; I Fujimoto; A Inoue; H Yamazaki Journal: N Engl J Med Date: 1993-06-24 Impact factor: 91.245