Authors: S Sasazuki; S Kono; I Todoroki; S Honjo; Y Sakurai; K Wakabayashi; M Nishiwaki; H Hamada; H Nishikawa; H Koga; S Ogawa; K Nakagawa Journal: Eur J Epidemiol Date: 1999-03 Impact factor: 8.082
Authors: N Méndez-Sánchez; J Jessurun; G Ponciano-Rodríguez; P Alonso-de-Ruiz; M Uribe; M Hernández-Avila Journal: Dig Dis Sci Date: 1993-04 Impact factor: 3.199