Report of a study titled Retrospective Neuropathological Review of Prion Disease in UK Haemophiliac Patients by Christine Lee James Ironisde Jeanne Bell Paul Giangrande Christopher Ludlam Margaret Esiri James McLaughlin. Examined the possibility of transmission of CJD via large pool clotting factor concentrates by examining the brains of 33 HIV1 positive haemophiliac patients who died from HIVAIDS or liver disease.