Authors: J I Esteban; A González; J M Hernández; L Viladomiu; C Sánchez; J C López-Talavera; D Lucea; C Martin-Vega; X Vidal; R Esteban Journal: N Engl J Med Date: 1990-10-18 Impact factor: 91.245
Authors: R D Aach; C E Stevens; F B Hollinger; J W Mosley; D A Peterson; P E Taylor; R G Johnson; L H Barbosa; G J Nemo Journal: N Engl J Med Date: 1991-11-07 Impact factor: 91.245
Authors: J P Watson; A M Brind; C E Chapman; C L Bates; F K Gould; S J Johnson; A D Burt; J Ferguson; P Simmonds; M F Bassendine Journal: Gut Date: 1996-02 Impact factor: 23.059