@misc{indiciaeb6b6ebad9219, title = {Rheumatoid factor and the fixation of complement.}, author = {N J Zvaifler}, year = {1969}, doi = {10.1111/j.1749-6632.1969.tb43104.x}, url = {https://pubmed.ncbi.nlm.nih.gov/4193448/}, note = {Source identifier: 4193448} }