Fig. 1: Study cohort flow diagram for preterm infants admitted to neonatal units in England and Wales (2012–2020).
From: Necrotising enterocolitis and mortality in very preterm babies with severe congenital heart disease

Flow diagram of babies born <32 weeks' gestation and admitted to neonatal units in England and Wales between 2012 and 2020, stratified by severe congenital heart disease status, severe NEC status and survival to 37 weeks' corrected gestational age.