1. Estimating cumulative point prevalence of rare diseases: analysis of the Orphanet database
2. U.S. Food and Drug Administration. An Act to amend the Federal Food, Drug, and Cosmetic Act to facilitate the development of drugs for rare diseases and conditions, and for other purposes. Public Law 97-414. 96 STAT. 2049. Washington, D.C.: U.S. Congress; 1983.
3. European Commission. Directorate-General for Research and Innovation. Collaboration: a key to unlock the challenges of rare diseases research. Luxembourg: Publications Office of the European Union; 2021.
4. Global Genes. RARE disease facts. [https://globalgenes.org/learn/rare-disease-facts/].
5. Ko KP. Analyzing the status of rare diseases and ways to improve support for rare diseases patients in Korea. Cheongju: Korea Centers for Disease Control and Prevention; 2018 Nov.