1. Department of Pathology, Dunedin School of Medicine, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
2. Department of Anatomical Pathology, Flinders University and SA Pathology Bedford Park 5042, Australia
3. Sydney Local Health District, Concord Repatriation General Hospital, Concord, New South Wales 2139, Australia
4. School of Life Sciences, University of Technology Sydney, P.O. Box 123 Broadway, New South Wales 2007, Australia