TY  - JOUR
AU  - Christensen, F
AU  - Soballe, K
AU  - Ejsted, R
AU  - Luxhoj, T
DO  - doi:10.1302/0301-620X.68B4.3733840
UR  - https://doi.org/10.1302/0301-620X.68B4.3733840
TI  - The Catterall classification of Perthes' disease: an assessment of reliability
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 68-B
IS  - 4
PY  - 1986
SP  - 614
EP  - 615
ER  -