RT Journal Article SR Electronic T1 Clinician guide to COVID-19 diagnostics 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-2020-321272 DO 10.1136/archdischild-2020-321272 A1 Mildred A Iro A1 Helen Umpleby A1 Emanuela Pelosi YR 2021 UL http://ep.bmj.com/content/early/2021/03/18/archdischild-2020-321272.abstract AB