Greene, S., J. Williams, E. Doyle, E. Harris, C. McCrory, A. Murray, L. Swords and C. Whelan (2010). Growing Up in Ireland: Review of the Literature Pertaining to the First Wave of Data Collection with the Infant Cohort at 9 Months, Dublin: Department of Health and Children, https://www.esri.ie/publications/growing-up-in-ireland-review-of-the-literature-pertaining-to-the-first-wave-of-data