1South Western Sydney Colorectal Tumor Group, Sydney South West Area Health Service, Sydney, Australia
2Centre for Research, Evidence Management and Surveillance, Sydney South West Area Health Service, Sydney, Australia
3School of Public Health and Community Medicine, University of New South Wales, Sydney, Australia
4South Western Sydney Clinical School, University of New South Wales, Sydney, Australia
5South Western Area Pathology Service, Sydney, Australia
6School of Medical Sciences, University of New South Wales, Sydney, Australia
7South Western Sydney Colorectal Tumor Group, Sydney South West Area Health Service, R103, 68 Eldridge Road, Bankstown, NSW 2200, Australia
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