@article{doi:10.1302/0301-620X.52B4.667,
author = {Chalmers, J. and Ho, K. C.},
title = {GEOGRAPHICAL VARIATIONS IN SENILE OSTEOPOROSIS },
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {52-B},
number = {4},
pages = {667-675},
year = {1970},
doi = {10.1302/0301-620X.52B4.667},
url = {https://doi.org/10.1302/0301-620X.52B4.667}
}