TY  - JOUR
AU  - Ratliff, A. H. C.
DO  - doi:10.1302/0301-620X.49B1.102
UR  - https://doi.org/10.1302/0301-620X.49B1.102
TI  - PERTHES' DISEASE 
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 49-B
IS  - 1
PY  - 1967
SP  - 102
EP  - 107
ER  -