@misc{indiciae46055dae703a, title = {Major histocompatibility complex (MHC) complement deficiency, ancestral haplotypes and systemic lupus erythematosus (SLE): C4 deficiency explains some but not all of the influence of the MHC.}, author = {F T Christiansen and W J Zhang and M Griffiths and S A Mallal and R L Dawkins}, year = {1991}, url = {https://pubmed.ncbi.nlm.nih.gov/1757937/}, note = {Source identifier: 1757937} }