@article{doi:10.1302/0301-620X.81B2.0810328,
author = {Yamamoto, T. and DiCarlo, E. F. and Bullough, P. G.},
title = {The prevalence and clinicopathological appearance of extension of osteonecrosis in the femoral head},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {81-B},
number = {2},
pages = {328-332},
year = {1999},
doi = {10.1302/0301-620X.81B2.0810328},
url = {https://doi.org/10.1302/0301-620X.81B2.0810328}
}