RT Journal Article SR Electronic T1 General anaesthesia under the age of 4 years has minimal impact on future academic performance 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 edpract-2016-312518 DO 10.1136/archdischild-2016-312518 A1 Amanda Jane Friend A1 Thomas Engelhardt A1 Tom Hansen YR 2017 UL http://ep.bmj.com/content/early/2017/05/11/archdischild-2016-312518.abstract AB