1. Haematology Department, Calvary Mater Newcastle, Waratah, NSW 2298, Australia
2. University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
3. Hunter Medical Research Institute, Lookout Road, New Lambton, NSW 2305, Australia
4. New South Wales Health Pathology, John Hunter Hospital, Lookout Road, New Lambton, NSW 2305, Australia