RT Journal Article SR Electronic T1 A four-vessel umbilical cord 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 F115 OP F115 DO 10.1136/archdischild-2016-311715 VO 102 IS 2 A1 Marjolijn SW Quaak A1 Jos MT Draaisma YR 2017 UL http://fn.bmj.com/content/102/2/F115.abstract AB