1. Rare childhood diseases: how should we respond?;Zurynski;Arch Dis Child,2008
2. The common problem of rare disease in general practice;Knight;Med J Aust,2006
3. Eurodis, Rare Diseases: Understanding the Public Health Priority; http://www.eurodis.org.
4. http://ec.europa.eu/health/rare_diseases/policy_en.
5. https://globalgenes.org/rare-diseases-facts-statistics/.