Analgesic Efficacy of Epidural Levobupivacaine 0.25% and Morphine 0.005%, versus Morphine 0.005%, or Levobupivacaine 0.25%, in Patients Following Major Abdominal Surgical Procedures.
Analgesic Efficacy of Epidural Levobupivacaine 0.25% and Morphine 0.005%, versus Morphine 0.005%, or Levobupivacaine 0.25%, in Patients Following Major Abdominal Surgical Procedures.