Footnotes

• Twitter @lebeche, @AngelesFite

• Contributors ALA performed the editing of the video and wrote the manuscript. MAA contributed to the editing of the video and corrected the manuscript. APB, SC, VB and AGM supervised the video editing and the manuscript. ALA is the guarantor.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Provenance and peer review Not commissioned; internally peer reviewed.