1. Orphan Drug Act 1983, Public Law No 97-414, 97th Congress (4 January 1983). Statute 96. p. 2049-66. 1983. (Consultado el 23/01/2020.) Disponible en: https://www.govinfo.gov/content/pkg/STATUTE-96/pdf/STATUTE-96-Pg2049.pdf.
2. European Commission. Programme of Community Action on Rare Diseases (1999-2003). 1999. (Consultado el 23/01/2020.) Disponible en: http://ec.europa.eu/health/archive/ph_overview/previous_programme/rare_diseases/raredis_wpgm99_en.pdf.
3. Rare disease terminology and definitions – a systematic global review: report of the ISPOR Rare Disease Special Interest Group;Richter;Value Heal.,2015
4. A compilation of national plans, policies and government actions for rare diseases in 23 countries;Khosla;Intractable Rare Dis Res.,2018
5. EUCERD. Report on the state of the art of rare disease activities in Europe. Part V: activities of Member States and other European Countries in the field of rare diseases. 2014. (Consultado el 23/01/2020.) Disponible en: http://www.eucerd.eu/upload/file/Reports/2014ReportStateofArtRDActivitiesV.pdf.