@article{doi:10.1302/0301-620X.99B7.BJJ-2016-1350.R1,
author = {Helmerhorst, G. T. T. and Teunis, T. and Janssen, S. J. and Ring, D.},
title = {An epidemic of the use, misuse and overdose of
opioids and deaths due to overdose, in the United States and Canada},
journal = {The Bone & Joint Journal},
volume = {99-B},
number = {7},
pages = {856-864},
year = {2017},
doi = {10.1302/0301-620X.99B7.BJJ-2016-1350.R1},
url = {https://doi.org/10.1302/0301-620X.99B7.BJJ-2016-1350.R1}
}