@article{doi:10.1302/0301-620X.60B4.711792,
author = {Barker, DJ and Dixon, E and Taylor, JF},
title = {Perthes' disease of the hip in three regions of England},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {60-B},
number = {4},
pages = {478-480},
year = {1978},
doi = {10.1302/0301-620X.60B4.711792},
url = {https://doi.org/10.1302/0301-620X.60B4.711792}
}