Waterfield Thomas, Dyer Emma M, Lyttle Mark D
Emergency Department, Royal Belfast Hospital for Sick Children, Belfast, UK.
Paediatric Department, Royal Free London NHS Foundation Trust, London, UK.
Arch Dis Child Educ Pract Ed. 2018 Oct;103(5):236-240. doi: 10.1136/archdischild-2017-313998. Epub 2018 Mar 7.