@misc{misc90cc1f27,
title   = {Dose-dependent analgesia of epidural s(+)-ketamine in acute postoperative pain following orthopedic surgery},
author = {Lauretti, Gabriela Rocha and Rodrigues, A. M. and Lima, I. R. and Oliveira, A. M.},
year = {2001},
booktitle   = {Annual Meeting of American Societies of Regional Anesthesia}
}