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. 2019 Aug 18;8(13):6127–6138. doi: 10.1002/cam4.2476

Figure 4.

Figure 4

The period of follow‐up in which a significant difference in colorectal cancer mortality (gray and black bars) or all‐cause mortality (black bars) can be found by number of people in each arm using flexible sigmoidoscopy once in a lifetime in the screened arm