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Gastroenterology clinics of North America.-- (1987) -.-- Philadelphia ISSN 0889-8553   Full Text Free for subscribers of print - Controlled access by IP and password URL https://www.gastro.theclinics.com/issues Available since    1987 Also on the years    1558-1942 Note    Free access to some additional fulltext articles. Full Text Free for subscribers of print - Controlled access by IP URL http://www.sciencedirect.com/science/journal/08898553 Agregador/Provider    CAPES/MEC Available since    1996