Author contributions
PG Wittkopf and MI Johnson both contributed equally to the writing of the article.
Financial & competing interests disclosure
The authors are currently delivering a program of research in this area funded by the Science Without Borders program, Government of Brazil. 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.