Footnotes

• VK and SM are joint first authors.

• Twitter @Viktorija__K

• Contributors VK, SM and HW decided to pursue this specific topic area. VK and SM were equally responsible for the researching, writing and editing, therefore VK and SM are first coauthors. HW contributed her expertise and was involved in the editing process.

• 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.

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