Methotrexate in inflammatory bowel disease: a multicenter retrospective study focused on long-term efficacy and safety. The Madrid experience - Gonzalez-Lama, Yago; Taxonera, Carlos; Lopez-Sanroman, Antonio; Lazaro Perez-Calle, Jose; Bermejo, Fernando; Pajares, Ramon; Mcnicholl, Adrian G; Opio, Veronica; Luis Mendoza, Juan; Lopez, Pilar; Algaba, Alicia; Estelles, Jesus; et al. (European Journal Of Gastroenterology & Hepatology, 2012)