Authors: G Corazza; R A Valentini; M Frisoni; U Volta; G Corrao; F B Bianchi; G Gasbarrini Journal: Gastroenterology Date: 1992-11 Impact factor: 22.682
Authors: C Catassi; I M Rätsch; E Fabiani; M Rossini; F Bordicchia; F Candela; G V Coppa; P L Giorgi Journal: Lancet Date: 1994-01-22 Impact factor: 79.321