1 North West School of Anaesthesia, NHS England North West (Workforce Training and Education), Manchester, UK.
2 Department of Anaesthesia, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK; Lancaster Medical School, Lancaster University, Lancaster, UK. Electronic address: https://twitter.com/DrSusannahP.
3 Department of Anaesthesia, The Christie NHS Foundation Trust, Manchester, UK. Electronic address: susannah.patey1@nhs.net.