Hemotherapy Hemostasis, Hospital Clínic, Barcelona, Spain; Clinical Immunology and Transfusion Medicine, University Hospital, Uppsala, Sweden; EFS Bretagne, Rennes, France; Banc de Sang i Teixits, Barcelona, Spain; Blood Transfusion Service, Glasgow Blood Transfusion Service, Glasgow, United Kingdom; Cerus Corporation, Concord, CA, United States; SNBTS National Science Laboratory, Edinburgh, United Kingdom