@misc{miscbb63db7c,
title   = {Alfentanil subcutaneous patient controlled analgesia: a cheap and effective alternative to morphina patiente controlle de analgesia for postoperative pain},
author = {Lauretti, G R and Nidademos, A P and Mattos, A L and Garcia, L V},
year = {1995},
booktitle   = {Simposio Panamericano de Anestesia Regional}
}