Letter from Prof Christopher A Ludlam, Haematology and Coagulation Medicine, NHS Lothian faxed to Carolyn Leckie MSP, Scottish Parliament, re Cryoprecipitate and Factor VIII use; study in Edinburgh; Implicated Batch; Heat Treatment; Commercial Factor VIII; Interpretation of an HIV Result in 1984; Clinical Trials for Heat Treated Products; Patient Transfusion Records; Risk of Infection with Blood Borne Virus after 1980; Compensation for Patients.