1. Fourth case of variant CJD infection associated with blood transfusion;Health Protection Agency;Press release,2007
2. Detection of prions in blood;Castilla;Nature medicine,2005
3. CHMP position statement on Creutzfeldt–Jakob disease and plasma-derived and urine-derived medicinal products. EMEA/CPMP/BWP/2879/02/rev 1;European Medicines Agency/The Committee for Medicinal Products for Human Use (CHMP)/Biotechnology Working Party;London,2004
4. Guideline on the investigation of manufacturing processes for plasma-derived medicinal products with regard to vCJD risk;The European Agency for the Evaluation of Medicinal Products/The Committee for Medicinal Products for Human Use (CHMP)/Biotechnology Working Party;CPMP/BWP/5136/03 London,2004
5. Strengthening of quality and safety assurance of drugs and medical devices manufactured using components of human origin as raw materials. PFSB notification no.0209003 dated February 9, 2005; Japan: MHLW (in Japanese).