1. Medical Imaging Department; Orange Health Service; PO Box 319 Orange New South Wales 2800 Australia
2. School of Biomedical Sciences; Charles Sturt University; Locked Bag 49 Dubbo New South Wales 2830 Australia
3. School of Biomedical Sciences; Charles Sturt University; Panorama Avenue Bathurst New South Wales 2795 Australia
4. Quantitative Consulting Unit; Charles Sturt University; Locked Bag 588 Wagga Wagga New South Wales 2678 Australia