GE - Portuguese Journal of Gastroenterology, volume 29, number 5
GE - Portuguese Journal of Gastroenterology, volume 29, number 5
GE - Portuguese Journal of Gastroenterology, volume 29, number 6
GE - Portuguese Journal of Gastroenterology, volume 29, number 3
GE - Portuguese Journal of Gastroenterology, volume 29, number 4
GE - Portuguese Journal of Gastroenterology, volume 29, number 2