Efficacy and side effect profile of varying doses of intrathecal fentanyl added to bupivacaine for labor analgesia.
Wong CA, Scavone BM, Slavenas JP, Vidovich MI, Peaceman AM, Ganchiff JN, Strauss-Hoder T, McCarthy RJ. Efficacy and side effect profile of varying doses of intrathecal fentanyl added to bupivacaine for labor analgesia. Int J Obstet Anesth. 2004 Jan; 13(1):19-24.