1 Department of Haematology, St Vincent's Hospital, Darlinghurst, New South Wales, Australia; Faculty of Medicine, University of New South Wales, Sydney, Australia. Electronic address: richard.blennerhassett@svha.org.au.
2 Department of Haematology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia; PathWest Laboratory Medicine, Murdoch, Western Australia, Australia.
3 Department of Haematology, St Vincent's Hospital, Darlinghurst, New South Wales, Australia; Faculty of Medicine, University of New South Wales, Sydney, Australia.