1. Orphanet: The Portal for Rare Diseases and Orphan Drugs http://www.orpha.net/consor/cgi-bin/index.php?lng=EN
2. The clinical effectiveness and cost-effectiveness of enzyme replacement therapy for Gaucher’s disease: a systematic review;Connock;Health Technol Assess,2006
3. European Union Committee of Experts on Rare Diseases http://www.eucerd.eu/__PP__0.html