C-1 Esterase Deficiency
- Article from eMedicine.com by Michael Elnicki MD on C-1 Esterase Deficiency also known as Hereditary angioedema (HAE).
- http://www.emedicine.com/med/topic420.htm

Hereditary Angioedema
- A definition along with a look at the causes, incidence and risk factors.
- http://www.nlm.nih.gov/medlineplus/ency/article/001456.htm

Reader Digest Health
- Hereditary Angioedema, a general discussion, alternate names and resources.
- http://www.rd.com/common/nav/index.jhtml?articleId=8612968

MedicineNet.com - Medical Dictionary
- A brief article about hereditary angioedema.
- http://www.medicinenet.com/Script/Main/Art.asp?li=MNI&ArticleKey=3721

E-Medicine: HAE
- An in dept look at hereditary angioedema beginning with an introduction, clinical features, differentials, work up, treatment, medication and follow up.
- http://www.emedicine.com/derm/topic24.htm

Hereditary Angioedema Support Group
- A non profit Organization dedicated to those families that are touched by a rare blood disease known as Hereditary Angioedema
- http://www.hereditaryangioedema.com/