Authors: J E Valenzuela; R G Berlin; W J Snape; T L Johnson; B I Hirschowitz; J Colon-Pagan; R S Morse; J Petrozza; G M Van Deventer; A Cagliola Journal: Dig Dis Sci Date: 1991-06 Impact factor: 3.199
Authors: E Verdu; F Viani; D Armstrong; R Fraser; H H Siegrist; B Pignatelli; J P Idström; C Cederberg; A L Blum; M Fried Journal: Gut Date: 1994-04 Impact factor: 23.059