Fernández-Esparrach G, Gimeno-García A Z, Ayuso J R, Ginès A, Bordas J M
Endoscopy Unit, Institut de Malalties Digestives, Hospital Clínic, IDIBAPS. University of Barcelona, Spain.
Endoscopy. 2007 Feb;39 Suppl 1:E188. doi: 10.1055/s-2007-966102. Epub 2007 Jul 5.