Garner, Alan A.
Bennett, Nicholas
Weatherall, Andrew
Lee, Anna
Article History
Received: 1 January 2020
Accepted: 31 March 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: Not applicable to a systematic review.
: Not applicable to a systematic review.
: A.L. is an editor for the Cochrane Anaesthesia and the Cochrane Emergency and Critical Care Review Groups and is a member of the editorial board for <i>Perioperative Medicine Journal</i>. All other authors declare no conflicts of interest.