Veloso Nuno, Silva João Dinis, Pinto-Marques Pedro
Gastroenterology Department, Hospital Espírito Santo, Évora, Portugal.
Gastroenterology Department, Hospital Garcia de Orta, Almada, Portugal.
Gastroenterology. 2012 Nov;143(5):e8-e9. doi: 10.1053/j.gastro.2012.04.004. Epub 2012 Sep 22.