@article{doi:10.1302/0301-620X.75B3.8496234,
author = {Slowik, GM and Colton, CL},
title = {A mobility progress chart},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {75-B},
number = {3},
pages = {504-505},
year = {1993},
doi = {10.1302/0301-620X.75B3.8496234},
url = {https://doi.org/10.1302/0301-620X.75B3.8496234}
}