RT Journal Article SR Electronic T1 Niacin, NAD and malformations JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 887 OP 887 DO 10.1136/archdischild-2017-313941 VO 102 IS 10 YR 2017 UL http://adc.bmj.com/content/102/10/887.abstract AB