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Economic repercussions of implementing a protocol for urgent surgical repair of thrombosed arteriovenous fistulae Pedro Jiménez-Almonacid, Enrique Gruss, Manuel Lasala, Silvia del Riego, Guillermo López, José A. Rueda, Laura Vega, Santiago Linacero, Eduardo Celi, Edgardo Celi, Enrique Colás, Luis Martín, Libertad Martín, Susana Lorenzo, Antonio Quintáns