The difference between a spinal and epidural
resources :
*http://www.newkidscenter.com/Difference-Between-Epidural-And-Spinal-Block.html
*Epidural Anesthesia - Animation by Cal Shipley, M.D.
*Purpa Mukherjee. "Difference Between Epidural and Spinal." DifferenceBetween.net. November 7, 2009 http://www.differencebetween.net/science/health/difference-between-epidural-and-spinal/
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