Footnotes

• Contributors All authors have contributed equally.

• 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 AW and ST are committee members of the Neonatal and Paediatric Pharmacy Group and have contributed to the development of the position statement on standardised concentrations of unlicensed liquid medicines in children.

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