GE - Portuguese Journal of Gastroenterology, volume 22, number 1
GE - Portuguese Journal of Gastroenterology, volume 22, number 1
GE - Portuguese Journal of Gastroenterology, volume 22, number 2
GE - Portuguese Journal of Gastroenterology, volume 22, number 4
GE - Portuguese Journal of Gastroenterology, volume 22, number 3
GE - Portuguese Journal of Gastroenterology, volume 22, number 5