Patient.co.uk
An introductory article written by doctors for health professionals. Includes information on epidemiology, presentation, classification, investigations, differential diagnosis, management, complications, prognosis, and screening.
National Organization for Rare Disorders (NORD)
The National Organization for Rare Disorders (NORD) is “committed to the identification, treatment, and cure of rare disorders through programs of education, advocacy, research, and service.” This article about extrahepatic biliary atresia has introductory information on symptoms, causes, affected populations, related disorders, standard therapies, and investigational therapies.