Authors: E J Ramsey; K V Carey; W L Peterson; J J Jackson; F K Murphy; N W Read; K B Taylor; J S Trier; J S Fordtran Journal: Gastroenterology Date: 1979-06 Impact factor: 22.682
Authors: B J Rathbone; J I Wyatt; B W Worsley; S E Shires; L K Trejdosiewicz; R V Heatley; M S Losowsky Journal: Gut Date: 1986-06 Impact factor: 23.059
Authors: R J Loffeld; H V Potters; J W Arends; E Stobberingh; J A Flendrig; J P van Spreeuwel Journal: J Clin Pathol Date: 1988-01 Impact factor: 3.411