Recommendations of the Spanish Working Group on Crohn's Disease and Ulcerative Colitis (GETECCU) on the use of abdominal ultrasound in inflammatory bowel disease Fernando Muñoz; Tomás Ripollés; Joaquín Poza Cordón; Berta de las Heras Páez de la Cadena; María Jesús Martínez-Pérez; Enrique de Miguel; Yamile Zabana; Miriam Mañosa Ciria; Belén Beltrán; Manuel Barreiro-de Acosta;

Optimization of azathioprine dose in combined treatment with anti-TNF-alpha in inflammatory bowel disease Javier Lucas Ramos; Cristina Suárez Ferrer; Joaquín Poza Cordón; María Sánchez Azofra; Jose Luis Rueda García; Eduardo Martin Arranz; Jorge Yebra Carmona; Irene Andaluz García; Maria Dolores Martín Arranz;

Urgent endoscopy versus early endoscopy: Does urgent endoscopy play a role in acute non-variceal upper gastrointestinal bleeding? Javier Lucas Ramos; Jorge Yebra Carmona; Irene Andaluz García; Marta Cuadros Martínez; Patricia Mayor Delgado; Maria Ángeles Ruiz Ramírez; Joaquín Poza Cordón; Cristina Suárez Ferrer; Ana Delgado Suárez; Nerea Gonzalo Bada; Consuelo Froilán Torres;