Erratum 

The authors would like to withdraw the following abstract, which appeared in Anesthesiology in 1997.

Peres da Silva E, Abbout TK, Lee J: Comparison of 0.07% ropacaine plus sufentanil and 0.07% bupivacaine plus sufentanil for epidural anesthesia during labor and delivery (abstract). Anesthesiology 1997; 87(3A):882