@article{doi:10.1302/0301-620X.60B2.659461,
author = {Dickens, DR and Menelaus, MB},
title = {The assessment of prognosis in Perthes' disease},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {60-B},
number = {2},
pages = {189-194},
year = {1978},
doi = {10.1302/0301-620X.60B2.659461},
url = {https://doi.org/10.1302/0301-620X.60B2.659461}
}