RT Journal Article SR Electronic T1 Answers to Illuminations questions 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 161 OP 161 DO 10.1136/archdischild-2015-309108a VO 101 IS 3 A1 Helen Williams YR 2016 UL http://ep.bmj.com/content/101/3/161.abstract AB