RT Journal Article SR Electronic T1 Effect of Baricity on Spinal Anaesthesia with Amethocaine JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 41 OP 42 DO 10.1136/rapm-00002370-198101000-00010 VO 6 IS 1 A1 Jordan Katz YR 1981 UL http://rapm.bmj.com/content/6/1/41.2.abstract AB