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Guidelines for Clinical Practice
Luis Gracia, Jesús Mateo, Enrique López, Sergio Puértolas, Antonio Lobo-Escolar, José Cegoñino, Elena Ibarz, Antonio Herrera 
World J Orthop 3(4):25-41. Published online Apr 18, 2012. doi: 10.5312/wjo.v3.i4.25