PT - JOURNAL ARTICLE AU - Steven McVea AU - Kate Skehin AU - Mark Terris TI - Waves, traces and shark fins AID - 10.1136/archdischild-2016-310957 DP - 2017 Oct 01 TA - Archives of disease in childhood - Education & practice edition PG - 270--271 VI - 102 IP - 5 4099 - http://ep.bmj.com/content/102/5/270.short 4100 - http://ep.bmj.com/content/102/5/270.full SO - Arch Dis Child Educ Pract Ed2017 Oct 01; 102