1. Blood Stocks Management Scheme 2007 Inventory Practice Survey 2007 Blood Storage - Fridges and Alarms www.bloodstocks.co.uk/pdf/IPS2007longreport.pdf
2. Blood Stocks Management Scheme 2009 ABO and the Hospital Blood Group Distribution Survey www.bloodstocks.co.uk/pdf/Executive_Summary1.pdf
3. The use and abuse of group O Neg red cells;Chapman;Transfusion,2005
4. National Comparative Audit of Blood Transfusion Steering Group 2010 2010 Re-audit of the Use of Group O RhD Negative Red Cells hospital.blood.co.uk/library/pdf/re-audit_of_the_use_of_Group_O_RhD_negative_red_cells_doc_2010.pdf
5. Hospital blood inventory practice: the factors affecting stock level and wastage;Perera;Transfusion Medicine,2009