Footnotes

• Handling editor Josef S Smolen

• Twitter @doronrimar@gmail.com

• Contributors SK: data collection and analysis, writing. TZ: contributed data, supervision. IH: contributed data. TR: contributed data, resources. SO: contributed data, resources. NA: contributed data, resources. AS: writing review and editing. GS: writing review and editing, supervision. DR: project administration, conceptualisation.

• 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.