Murray, A., McCrory, C., Thornton, M., Williams, J., Quail, A., Swords, L., and Doyle, E. (2010). Growing Up in Ireland: Design, Instrumentation and Procedures for the Child Cohort (at 9 years), Dublin: Department of Children and Youth Affairs, https://www.esri.ie/publications/growing-up-in-ireland-design-instrumentation-and-procedures-for-the-child-cohort-at-9