This study has been funded by Red SAMID. RETICS, ISCIII -- Sub-DirectorateGeneral for Research Assessment and Promotion, and the European Regional Development Fund (ERDF), ref. RD 12/0026/0006.

The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way.

Conflict of interest statement
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The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

[^1]: Approved by: Frontiers in Pediatrics, Frontiers Media SA, Switzerland

[^2]: This article was submitted to Pediatric Critical Care, a section of the journal Frontiers in Pediatrics
