Continuous Infusion Epidural Anesthesia during Labor: A Randomized, Double-blind Comparison of 0.0625% Bupivacaine/0.002% Butorphanol and 0.125% Bupivacaine
Continuous Infusion Epidural Anesthesia during Labor: A Randomized, Double-blind Comparison of 0.0625% Bupivacaine/0.002% Butorphanol and 0.125% Bupivacaine