@misc{indiciae46c0b58bc25b, title = {Sulphonamide-resistant meningococcus.}, author = {J Calder}, year = {1971}, doi = {10.1016/s0140-6736(71)92605-5}, url = {https://pubmed.ncbi.nlm.nih.gov/4104802/}, note = {Source identifier: 4104802} }