Placental transfer of bupivacaine enantiomers in normal pregnant women receiving epidural anesthesia for cesarean section - Duarte, Luciana de Barros; Moisés, Elaine Christine Dantas; Cavalli, Ricardo Carvalho; Lanchote, Vera Lúcia; Duarte, Geraldo; Cunha, Sérgio Pereira da (European Journal of Clinical Pharmacology, 2007)