Fig. 2
Bias Risk Assessment in the Studies Included in the Meta-Analysis: a Randomized Controlled Trials according to RoB2. b Non-Randomized Studies according to ROBINS-I
Fig. 2 | BMC Pregnancy and Childbirth
Bias Risk Assessment in the Studies Included in the Meta-Analysis: a Randomized Controlled Trials according to RoB2. b Non-Randomized Studies according to ROBINS-I