RT Journal Article SR Electronic T1 Waves, traces and shark fins JF Archives of disease in childhood - Education & practice edition JO Arch Dis Child Educ Pract Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 270 OP 271 DO 10.1136/archdischild-2016-310957 VO 102 IS 5 A1 Steven McVea A1 Kate Skehin A1 Mark Terris YR 2017 UL http://ep.bmj.com/content/102/5/270.abstract AB