RT Journal Article SR Electronic T1 Can diaphragmatic ultrasound be used to predict extubation failure? JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP archdischild-2021-322812 DO 10.1136/archdischild-2021-322812 A1 Simon Jackson A1 Julie Richardson YR 2021 UL http://adc.bmj.com/content/early/2021/11/07/archdischild-2021-322812.abstract AB