@article{articledc860e11,
title   = {Epidural methadone results in dose-dependent analgesia in cancer pain, further enhanced by epidural dexamethasone},
author = {Lauretti, Gabriela Rocha and Rizzo, Claudia Carvalho and Mattos, A. L. and Rodrigues, S. W.},
year = {2013},
doi = {10.1038/bjc.2012.593},
journal   = {British Journal of Cancer}
}