RT Journal Article SR Electronic T1 Twinning and oesophageal atresia. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 660 OP 662 DO 10.1136/adc.49.8.660 VO 49 IS 8 A1 David, T J A1 O'Callaghan, S E YR 1974 UL http://adc.bmj.com/content/49/8/660.abstract AB