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Conroy, P. H.; Luyet, Cédric; McCartney, C. J.; McHardy, P. G. (2013). Real-time ultrasound-guided spinal anaesthesia: a prospective observational study of a new approach. Anesthesiology research and practice, 2013, p. 525818. Cairo (Egypt): Hindawi Publishing Corporation 10.1155/2013/525818
