Received: 11 August 2021
Accepted: 14 November 2021
First Online: 20 December 2021
: An ethics exemption was obtained for this study from the Royal Brisbane and Women's Hospital Human Research Ethics Committee (HREC) with a waiver of written consent for this retrospective study.
: Not applicable.
: The authors have no conflicts of interest to declare that are relevant to the content of this article.