RT Journal Article SR Electronic T1 Postcesarean Section Narcotic Requirements Following Epidural Anesthesia with Bupivacaine and Chloroprocaine JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 15 OP 16 DO 10.1136/rapm-00115550-198010000-00006 VO 5 IS 4 A1 Sheila E. Cohen A1 Janet Wyner A1 Peter B. Gregory YR 1980 UL http://rapm.bmj.com/content/5/4/15.abstract AB