GE - Portuguese Journal of Gastroenterology, volume 23, number 1
GE - Portuguese Journal of Gastroenterology, volume 23, number 1
GE - Portuguese Journal of Gastroenterology, volume 23, number 2
GE - Portuguese Journal of Gastroenterology, volume 23, number 4
GE - Portuguese Journal of Gastroenterology, volume 23, number 3
GE - Portuguese Journal of Gastroenterology, volume 23, number 5