References:
- Angioedema - (http://www.nhs.uk/conditions/Angioedema/Pages/Introduction.aspx)
- Hives and Angioedema - Overview - (http://www.mayoclinic.org/diseases-conditions/hives-and-angioedema/home/ovc-20257136)
- How common is angioedema? - (https://www.allergy.org.au/patients/skin-allergy/angioedema)
- What is HAE? - (http://www.haea.org/)
Editor: Suchitra Chari
Technically Checked by: Lingaraj