Statistics from Altmetric.com
Contributors EV wrote the first draft of the manuscript; FP contributed to the critical revision of the manuscript; MC obtained the iconographic documentation and contributed to the critical revision of the manuscript.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
Patient consent Obtained.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.