Correction to: BMC Gastroenterology (2022) 22:496 https://doi.org/10.1186/s12876-022-02592-4

After publication of this article [1], the authors reported that in the Funding information section the following was missing: ‘Grants from the Foundation of Shanghai Municipal Health Commission (Grant No. 201740038)’.

The original article [1] has been corrected.