@incollection{Leppert12,
author = {Wojciech Leppert},
title = {The Role of Opioid Analgesics in the Treatment of Pain in Cancer Patients},
booktitle = {Pain Management},
publisher = {IntechOpen},
address = {Rijeka},
year = {2012},
editor = {Gabor B. Racz and Carl E. Noe},
chapter = {16},
doi = {10.5772/29031},
url = {https://doi.org/10.5772/29031}
}