Correction to: BMC Gastroenterology (2022) 22:193 https://doi.org/10.1186/s12876-022-02270-5

After publication of this article [1], the authors reported that in this article there is a superfluous line in Fig. 1; the figure should have appeared as shown below.

Fig. 1
figure 1

Flowchart of colorectal cancer patient selection

The original article [1] has been updated.