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http://www.medicine.bg/novini/nad-polovin-milion-balgari-stradat-ot-redki-bolesti
[4] Ministry of Health National Program for Rare Diseases (2012)
www.rare-bg.com/wp-content/uploads/2013/01/NPRD_2009-20131.doc
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http://dx.doi.org/10.5504/BBEQ.2013.0066
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http://dx.doi.org/10.5504/BBEQ.2012.0075
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[10] INFOPACK (2010) Patient Care, a Public Affair. EURORDIS, European Union.
http://download.rarediseaseday.org/Rare%20Disease%20Day%20Info%20pack%202009.pdf
[11] MH (2009) National Council for Rare Diseases. National Program for Rare Diseases for the Period.
http://www.mh.government.bg/Articles.aspx?lang=bg-BG&
[12] Bignami, F. (2007) Eurordis Survey on Orphan Drugs Availability in Europe. Presented at the 6th Eurordis Round Table of Companies Workshop, Barcelona.
http://www.eurordis.org/IMG/pdf/2007ODsurvey-eurordis.pdf
[13] Simoens, S. (2011) Pricing and Reimbursement of Orphan Drugs: The Need for More Transparency. Orphanet Journal of Rare Diseases, 6, 42.
http://dx.doi.org/10.1186/1750-1172-6-42