1 Faculty of Medicine, Mater Research Institute, University of Queensland, Brisbane, Australia; Paediatric Critical Care Research Group, Mater Research Institute, University of Queensland, Brisbane, Australia; Paediatric Intensive Care Unit, Lady Cilento Children's Hospital, Children's Health Queensland, Brisbane, Australia; Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. Electronic address: l.schlapbach@uq.edu.au.
2 Division of Infectious Diseases and Hospital Epidemiology, and Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland.
3 Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.