C-1 Esterase Deficiency - Article from eMedicine.com by Michael Elnicki MD on C-1 Esterase Deficiency also known as Hereditary angioedema (HAE).
E-Medicine: HAE - An in dept look at hereditary angioedema beginning with an introduction, clinical features, differentials, work up, treatment, medication and follow up.
Hereditary Angioedema - A definition along with a look at the causes, incidence and risk factors.
Hereditary Angioedema Support Group - A non profit Organization dedicated to those families that are touched by a rare blood disease known as Hereditary Angioedema