M. Macias, «Estimación del riesgo de complicaciones mayores tras bloqueo neuroaxial: Cook TM, Counsell D, Wildsmith JAW. Major complications of central neuraxial block: report on the Third National Audit Project of the Royal College of Anaesthetists. Br J Anaesth 2009; 102 (2): 179-90», Rev Elect AnestesiaR, vol. 1, n.º 3, p. 1, mar. 2009.