1. From the Department of Haematology, Imperial College School of Medicine, Hammersmith Hospital, London, United Kingdom; Division of Cancer Services, Mater Hospital, South Brisbane, Australia; Department of Medicine and Department of Laboratories, North Shore University Hospital and New York University School of Medicine, Manhasset, New York; Nambour General Hospital, Nambour, Australia; III Medizinische Universitätsklinik, Klinikum Mannheim, Germany.