Authors: S Sontag; D Y Graham; A Belsito; J Weiss; A Farley; R Grunt; N Cohen; D Kinnear; W Davis; A Archambault Journal: N Engl J Med Date: 1984-09-13 Impact factor: 91.245
Authors: A Sonnenberg; S A Müller-Lissner; E Vogel; P Schmid; J J Gonvers; P Peter; G Strohmeyer; A L Blum Journal: Gastroenterology Date: 1981-12 Impact factor: 22.682