Footnotes

• Contributors RF, PL, J-BM, JCR, J-MD, AD and CJ designed the article. AD and CJ performed the methodology and the literature review. PL, J-BM and CJ gathered patients’ data. RF, PL, J-BM, JCR, J-MD, AD and CJ participated in the drafting of the manuscript. RF performed the critical revision of the manuscript. PL, JCR and CJ performed the final revision of the manuscript.

• 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; externally peer reviewed.