GE - Portuguese Journal of Gastroenterology, volume 26, number 3
GE - Portuguese Journal of Gastroenterology, volume 26, number 3
GE - Portuguese Journal of Gastroenterology, volume 26, number 2
GE - Portuguese Journal of Gastroenterology, volume 25, number 6
GE - Portuguese Journal of Gastroenterology, volume 26, number 1
GE - Portuguese Journal of Gastroenterology, volume 25, number 5