@article{doi:10.1302/0301-620X.73B3.1670460, author = {Joseph, B}, title = {Serum immunoglobulin in Perthes' disease}, journal = {The Journal of Bone & Joint Surgery British Volume}, volume = {73-B}, number = {3}, pages = {509-510}, year = {1991}, doi = {10.1302/0301-620X.73B3.1670460}, url = {https://doi.org/10.1302/0301-620X.73B3.1670460} }