Nunes Tiago, Chagas Marcelo de Souza, Biccas Beatriz
Division of Gastroenterology, Internal Medicine Department, HUCFF, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Gastroenterology. 2014 May;146(5):1174, 1430-1. doi: 10.1053/j.gastro.2014.01.002. Epub 2014 Mar 26.