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(a) Incidence of colorectal neuroendocrine tumours (NETs) in the total population per year of diagnosis per 100,000 inhabitants. (b) Incidence of colorectal NETs in the target age group for colorectal cancer screening (55–75 years*) per year of diagnosis per 100,000 inhabitants.
*Birth cohorts 1938–1957, of which four were not yet invited for screening because of the roll-out phase of the screening programme.
