Therapeutic drug monitoring in inflammatory bowel diseases. Position statement of the Spanish Working Group on Crohn¿s Disease and Ulcerative Colitis Francisco Rodríguez-Moranta; Federico Argüelles-Arias; Joaquín Hinojosa del Val; Marisa Iborra Colomino; M. Dolores Martín-Arranz; Luis Menchén Viso; Fernando Muñoz Núñez; Elena Ricart Gómez; José Germán Sánchez-Hernández; Teresa Valdés-Delgado; Jordi Guardiola Capón; Manuel Barreiro-de Acosta; Míriam Mañosa Ciria; Yamile Zabana Abdo; Ana Gutiérrez Casbas;

Incidence, and natural history of inflammatory bowel disease in Castilla y León:Prospective and multicenter epidemiological study Rosa María Sáiz-Chumillas; Jesús Barrio; Luis Fernández-Salazar; Lara Arias; Mónica Sierra Ausín; Concepción Piñero; Ana Fuentes Coronel; Laura Mata; Mónica Vásquez; Ana Carbajo; Noelia Alcaide; Noelia Cano; Aejandro Nuñez; Paola Fradejas; Mercedes Ibáñez; Luis Hernández; Beatriz Sicilia;

Relevance and needs of irritable bowel syndrome (IBS): Comparison with inflammatory bowel disease (IBD). (Please, if you are not interested in IBS, read it.) Fermín Mearin; Miquel Sans; Agustín Balboa;