L Nguyen BSci, MD; J Maingard BBiomedSci, MBBS, FRANZCR; A Jhamb MBBS (Hons), FRANZCR, EBIR, CCINR; M Brooks MBBS, FRANZCR, EBIR, CCINR; C Barras MBBS, BMedSc, PhD, Did.Surg.Anat., Dip.OMS, FRANZCR; HK Kok MB, BCh, BAO, BMedSci, MRCPI, MRCP, FFRRCSI, FRCR, FRANZCR, EBIR; H Asadi MD, PhD, FRANZCR, CCINR, EBIR, FCIRS.

Conflict of interest: A/Prof Christen Barras is an Editorial Board member of JMIRO and a co-author of this article. To minimise bias, they were excluded from all editorial decision-making related to the acceptance of this article for publication. The authors have no personal, financial or institutional interest in any of the drugs, materials or devices described in this article.