RT Journal Article SR Electronic T1 Pulse oximetry screening for critical congenital heart defects: a repeat UK national survey JF Archives of Disease in Childhood - Fetal and Neonatal Edition JO Arch Dis Child Fetal Neonatal Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP fetalneonatal-2017-313378 DO 10.1136/archdischild-2017-313378 A1 Paraskevi Mikrou A1 Anju Singh A1 Andrew K Ewer YR 2017 UL http://fn.bmj.com/content/early/2017/08/05/archdischild-2017-313378.abstract AB