Correction: BMC Pregnancy Childbirth 22, 315 (2022)

https://doi.org/10.1186/s12884-022-04604-3

Following publication of the original article [1], the authors reported an error in the information in the PRISMA diagram (Fig. 1).

Fig. 1
figure 1

PRISMA flow chart of the study

The original article [1] has been updated.