Footnotes

• Handling editor Josef S Smolen

• Contributors MvD and NV wrote the manuscript. MvD, TCK, BCF, EM-H and NV contributed towards patient medical history. All authors were involved in critical review, editing, revision and approval of the final 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.

• 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.

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