@article{doi:10.1302/0301-620X.49B1.102,
author = {Ratliff, A. H. C.},
title = {PERTHES' DISEASE },
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {49-B},
number = {1},
pages = {102-107},
year = {1967},
doi = {10.1302/0301-620X.49B1.102},
url = {https://doi.org/10.1302/0301-620X.49B1.102}
}