@misc{misc0c716754,
title   = {The effects of epidural s(+)-ketamine on the clonidine-induced antinociception in acute postoperative pain following orthopedic surgery},
author = {Lauretti, Gabriela Rocha and Rodrigues, A. M. and Lima, I. R. and Almeida, R. A.},
year = {2001},
booktitle   = {Annual Meeting of American Societies of Regional Anesthesia}
}