PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/archdischild-2011-300593 DP - 2012 Dec 01 TA - Archives of disease in childhood - Education & practice edition PG - 221--221 VI - 97 IP - 6 4099 - http://ep.bmj.com/content/97/6/221.short 4100 - http://ep.bmj.com/content/97/6/221.full SO - Arch Dis Child Educ Pract Ed2012 Dec 01; 97