Authors: J J Sung; S C Chung; T K Ling; M Y Yung; V K Leung; E K Ng; M K Li; A F Cheng; A K Li Journal: N Engl J Med Date: 1995-01-19 Impact factor: 91.245
Authors: R P Logan; P A Gummett; H D Schaufelberger; R R Greaves; G M Mendelson; M M Walker; P H Thomas; J H Baron; J J Misiewicz Journal: Gut Date: 1994-03 Impact factor: 23.059
Authors: E Hentschel; G Brandstätter; B Dragosics; A M Hirschl; H Nemec; K Schütze; M Taufer; H Wurzer Journal: N Engl J Med Date: 1993-02-04 Impact factor: 91.245