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Receiver operating characteristic curves of the gestational age‐specific z‐scores for cerebroplacental ratio (CPR), umbilical artery pulsatility index (UA PI) and middle cerebral artery pulsatility index (MCA PI), respectively, for the four outcomes perinatal asphyxia/mortality, small for gestational age (SGA), appropriate for gestational age/large for gestational age (AGA/LGA) liveborn infants with neonatal morbidity and SGA liveborn infants with neonatal morbidity
