GE - Portuguese Journal of Gastroenterology, volume 27, number 2
GE - Portuguese Journal of Gastroenterology, volume 27, number 2
GE - Portuguese Journal of Gastroenterology, volume 27, number 1
GE - Portuguese Journal of Gastroenterology, volume 26, number 5
GE - Portuguese Journal of Gastroenterology, volume 26, number 6
GE - Portuguese Journal of Gastroenterology, volume 26, number 4