Epidural Morphine or Butorphanol Augments Bupivacaine Analgesia During Labor
T. K. Abboud, A. Reyes, M. Richardson, A. Afrasiabi, L. D'onofrio, M. Kalra, J. Zhu, N. Khoo, M. Cheung, M. Mantilla, P. Mosaad, R. Paul
Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control May 1989, 14 (3) 115-120; DOI: 10.1136/rapm-00115550-198914030-00004