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Maria Teresa Herranz Bachiller, Jesus Barrio Andrés, Fernando Pons, Noelia Alcaide Suárez, Rafael Ruiz-Zorrilla, Lorena Sancho del Val, Sara Lorenzo Pelayo, Carlos De La Serna Higuera, Ramon Atienza Sánchez, Manuel Perez Miranda 
World J Gastrointest Oncol 5(2):34-37. Published online Feb 15, 2013. doi: 10.4251/wjgo.v5.i2.34