@misc{indiciaeb3b073b69ef1, title = {A study of complement fixation by rheumatoid factor using a haemolytic assay system.}, author = {M M Taylor-Upsahl and P M Johnson and O J Mellbye and J B Natvig}, year = {1977}, url = {https://pubmed.ncbi.nlm.nih.gov/872448/}, note = {Source identifier: 872448} }