@article{doi:10.1302/0301-620X.65B4.6874705,
author = {Laurence, M},
title = {Ultra-clean air},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {65-B},
number = {4},
pages = {375-377},
year = {1983},
doi = {10.1302/0301-620X.65B4.6874705},
url = {https://doi.org/10.1302/0301-620X.65B4.6874705}
}