1 Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann & Robert H Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA. Electronic address: lsanchezpinto@luriechildrens.org.
2 Cuidados Intensivos Pediátricos Especializados y Red Colaborativa Pediátrica de Latinoamérica, Casa de Galicia, Montevideo, Uruguay.
3 Unidad de Cuidados Intensivos Pediátricos y Red Colaborativa Pediátrica de Latinoamérica, Hospital Juan Pablo II, Universidad Nacional del Nordeste, Corrientes, Argentina.
4 Division of Critical Care, Faculty of Health Sciences, University of the Witwatersrand, Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa.
5 Paediatric Critical Care Research Group, Child Health Research Centre, The University of Queensland, Queensland Children's Hospital, Brisbane, QLD, Australia.
6 Department of Pediatrics and Emergency Medicine, School of Population and Public Health, University of British Columbia, British Columbia Children's Hospital, Vancouver, BC, Canada.