Article History
Received: 6 April 2019
Accepted: 23 July 2019
First Online: 6 August 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: JLV is the Editor-in-Chief of <i>Critical Care</i>. He has no other conflicts of interest to declare related to this manuscript. The other authors declare that they have no competing interests.