- https://www.oslo-universitetssykehus.no/sjeldnediagnoser
- https://helsenorge.no/sjeldne-diagnoser
- http://www.helsebiblioteket.no/sjeldne-diagnoser
- Orphanet
- https://ec.europa.eu/health/ern/networks_en
- Lists of medicinal products for rare diseases in Europe. Orphan Report Series August 2021.
- Sjeldenstrategien, Helse- og omsorgsdepartementet 10.08.2021
- Estimating cumulative point prevalence of rare diseases: analysis of the Orphanet database - PubMed (nih.gov)