. 2021 May 18;76(9):1167–1175. doi: 10.1111/anae.15512
© 2021 Association of Anaesthetists
This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency response. It can be used for unrestricted research re-use and analysis in any form or by any means with acknowledgement of the original source, for the duration of the public health emergency.