@article{doi:10.1302/0301-620X.45B3.462,
author = {Fernandez de Valderrama, J. A.},
title = {THE "OBSERVATION HIP" SYNDROME AND ITS LATE SEQUELAE},
journal = {The Journal of Bone & Joint Surgery British Volume},
volume = {45-B},
number = {3},
pages = {462-470},
year = {1963},
doi = {10.1302/0301-620X.45B3.462},
url = {https://doi.org/10.1302/0301-620X.45B3.462}
}