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. Author manuscript; available in PMC: 2023 May 1.
Published in final edited form as: Pediatr Res. 2022 Feb 7;92(5):1316–1324. doi: 10.1038/s41390-022-01942-y

Figure 1. Flow diagram of patient population.

Figure 1.

a Four sets of twins were included in the study; 3 sets only had 1 twin eligible at the start of the study. One set initially had both twins eligible, however 1 infant required a blood transfusion secondary to extreme anemia and became a screen failure. b Aged out indicated those mothers who stayed pregnant past 32 weeks 0 days gestation and therefore were no longer eligible for the study. AEDF/REDF, Absent end-diastolic flow/ reverse end-diastolic flow.