Footnotes

• XM and GN are joint senior authors.

• Handling editor Josef S Smolen

• Twitter @RakibaBelkhir

• Contributors KC and GN wrote the manuscript. RB and RS reviewed and corrected the manuscript. XM reviewed, corrected the manuscript and helped with the submission.

• 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.

• Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

• Patient consent for publication Not required.

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