Statistics from Altmetric.com
Contributors PK: conception, acquisition of data, design, drafting the article, final approval of the version to be published. EP: acquisition of data, design, revising the article, final approval of the version to be published. CS: drafting the article, revising the article, final approval of the version to be published.
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 consent for publication Parental/guardian consent obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.