Fig. 3From: Maternal and perinatal risks for monozygotic twins conceived following frozen-thawed embryo transfer: a retrospective cohort studyAnalysis of neonatal mortality by Kaplan–Meier plots. A comparison of neonatal survival probability for MZT versus DZT before (A) and after (B) the propensity score-based patient-matching. DZT, dizygotic twins; MZT, monozygotic twinsBack to article page