@article{doi:10.1302/0301-620X.81B4.0810590,
author = {Sugano, N. and Kubo, T. and Takaoka, K. and Ohzono, K. and Hotokebuchi, T. and Matsumoto, T. and Igarashi, H. and Ninomiya, S.},
title = {Diagnostic criteria for non-traumatic osteonecrosis of the femoral head},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {81-B},
number = {4},
pages = {590-595},
year = {1999},
doi = {10.1302/0301-620X.81B4.0810590},
url = {https://doi.org/10.1302/0301-620X.81B4.0810590}
}