Kustatscher, M., Hancock, J., McCluskey, G., Taylor, A. & Tisdall, E. 2023, The Impact of the COVID-19 Pandemic on the Delivery of Education to Children Under Five, University of Edinburgh. Available at: https://www.research.ed.ac.uk/en/publications/974e4bdd-1622-4533-8095-9d33ac292545