@article{doi:10.1302/0301-620X.53B2.230,
author = {Butler, R. Weeden},
title = {SPONTANEOUS ANTERIOR FUSION OF VERTEBRAL BODIES},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {53-B},
number = {2},
pages = {230-235},
year = {1971},
doi = {10.1302/0301-620X.53B2.230},
url = {https://doi.org/10.1302/0301-620X.53B2.230}
}