Fig. 4
From: Two laser-assisted hatching methods of embryos in ART: a systematic review and meta-analysis
Singleton and multiple pregnancies. The forest plot of D-LAH and T-LAH singleton and multiple pregnancies. a 2 studies showing that the singleton pregnancy rate of D-LAH was higher than T-LAH. b A total of 7 studies were included in this meta-analysis showing that there was no significant difference between D-LAH and T-LAH in multiple pregnancy. a singleton pregnancy; b multiple pregnancy