1 Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Charlotte R. Bloomberg Children’s Center, Baltimore, MD

2 Birmingham Acute Care Research group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom

3 Paediatric Intensive Care Unit, Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom

4 Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD

5 Department of Physical Medicine & Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD

*See also p. 893.

The authors have disclosed that they do not have any potential conflicts of interest.