@article{doi:10.1302/0301-620X.81B2.0810301,
author = {Ritter, M. A. and Koehler, M. and Keating, E. M. and Faris, P. M. and Meding, J. B.},
title = {Intra-articular morphine and/or bupivacaine after total knee replacement},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {81-B},
number = {2},
pages = {301-303},
year = {1999},
doi = {10.1302/0301-620X.81B2.0810301},
url = {https://doi.org/10.1302/0301-620X.81B2.0810301}
}