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José Manuel Aranda-Narváez, Antonio Jesús González-Sánchez, Custodia Montiel-Casado, Belinda Sánchez-Pérez, Carolina Jiménez-Mazure, Marta Valle-Carbajo, Julio Santoyo-Santoyo 
World J Gastrointest Surg 4(5):126-130. Published online May 27, 2012. doi: 10.4240/wjgs.v4.i5.126