@article {Grattan20, author = {Clive E H Grattan}, title = {Urticaria, angio-oedema and anaphylaxis}, volume = {2}, number = {1}, pages = {20--23}, year = {2002}, doi = {10.7861/clinmedicine.2-1-20}, publisher = {Royal College of Physicians}, issn = {1470-2118}, URL = {https://www.rcpjournals.org/content/2/1/20}, eprint = {https://www.rcpjournals.org/content/2/1/20.full.pdf}, journal = {Clinical Medicine} }