RT Journal Article SR Electronic T1 Pain Relief in Labor Using Epidural Pethidine with Adrenaline JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 157 OP 157 DO 10.1136/rapm-00002370-198110000-00009 VO 6 IS 4 A1 Jordan Katz YR 1981 UL http://rapm.bmj.com/content/6/4/157.1.abstract AB