@misc{indiciaeb9946e8244de, title = {Micro complement fixation assay for type-specific group A streptococcal antibody.}, author = {M K Wittner and E N Fox}, year = {1971}, doi = {10.1128/iai.4.4.441-445.1971}, url = {https://pubmed.ncbi.nlm.nih.gov/5005302/}, note = {Source identifier: 5005302} }