Authors: D A Ng; F G Opelka; D E Beck; J M Milburn; L R Witherspoon; T C Hicks; A E Timmcke; J B Gathright Journal: Dis Colon Rectum Date: 1997-04 Impact factor: 4.585
Authors: F Rieder; A Schneidewind; U Bolder; N Zorger; J Schölmerich; A Schäffler; S Gölder; F Kullmann; H Herfarth Journal: Endoscopy Date: 2006-05 Impact factor: 10.093