1. Australian Quarantine Inspection Service; PO Box 63, Port Adelaide, South Australia 5015, Australia S. Lester, BSc, Women's and Children's Hospital, 652 Seaview Road Grange South Australia 5022 Australia
2. Veterinary Pathology Services; 33 Flemington Street Glenside South Australia 5065 Australia
3. Ministry of Agriculture and Fisheries; PO Box 646 Gisborne New Zealand
4. South Australian Research and Development Institute; GPO Box 397 Adelaide South Australia 5001 Australia