@misc{indiciae4f5eab09665d, title = {Cold urticaria and complement C2 deficiency.}, author = {R G Sibbald and R A Eady and A Kobza-Black and M W Greaves}, year = {1979}, url = {https://pubmed.ncbi.nlm.nih.gov/465334/}, note = {Source identifier: 465334} }