%0 Journal Article %B Br J Anaesth %D 2009 %G eng %N 6 %P 739-48 %R 10.1093/bja/aep096 %T Failed spinal anaesthesia: mechanisms, management, and prevention. %V 102 %1 https://www.ncbi.nlm.nih.gov/pubmed/19420004 %8 06/2009