RT Journal Article SR Electronic T1 Effect of surgical ligation of the patent ductus arteriosus on cerebral perfusion of premature infants in the postoperative period 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 F277 OP F277 DO 10.1136/archdischild-2015-309793 VO 101 IS 3 A1 A T MacLaren A1 A M Heuchan YR 2016 UL http://fn.bmj.com/content/101/3/F277.abstract AB