Financial & competing interests disclosure
Andrew W Horne is supported by an MRC Clinician Scientist Fellowship. Gary Entrican is funded by the Scottish Government Rural and Environmental Research and Analysis Directorate (RERAD). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.