Correction to: BMC Pediatr 22, 12 (2022)

https://doi.org/10.1186/s12887-021-03047-7

Following the publication of the original article [1], the authors identified the following errors:

  1. 1.

    The legends of figures 4 and 5 should be:

figure a
  1. 2.

    Additional file 2: Updated file captured as supplementary file of this paper.