TY  - JOUR
AU  - Hall, AJ
AU  - Barker, DJ
DO  - doi:10.1302/0301-620X.71B2.2925740
UR  - https://doi.org/10.1302/0301-620X.71B2.2925740
TI  - Perthes' disease in yorkshire
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 71-B
IS  - 2
PY  - 1989
SP  - 229
EP  - 233
ER  -