RT Journal Article SR Electronic T1 Postoperative pulmonary complications after abdominal surgery: epidural compared with parenteral morphine analgesia. JF Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 6 OP 6 DO 10.1136/rapm-00115550-198813011-00006 VO 13 IS Suppl 1 A1 C. Jayr A1 A. Mollie A1 J. L. Bourgain A1 J. Truffa-Bachi A1 G. Treich YR 1988 UL http://rapm.bmj.com/content/13/Suppl_1/6.abstract AB