RT Journal Article SR Electronic T1 Epinephrine: The Effect on Analgesic Onset and Duration in Walking Epidural Analgesia During Early Labor. JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 36 OP 36 DO 10.1136/rapm-00115550-199924031-00036 VO 24 IS Suppl 1 A1 Hector J. Lacassie A1 H. Lacassie A1 J. Riquelme YR 1999 UL http://rapm.bmj.com/content/24/Suppl_1/36.abstract AB