L. KASHERMAN, A. FOY, A. TIERNEY, G.E.M. REEVES and H.A. TRAN From the School of Medicine and Population Health, University of Newcastle, Department of General Medicine, Calvary Mater Hospital, Department of Immunopathology, Hunter Area Pathology Service, Locked Bag 1, Hunter Region Mail Centre and Department of Clinical Chemistry, Hunter Area Pathology Service, Locked Bag 1, Hunter Region Mail...