Gannon, B., R. Layte, P. McGregor, D. Madden, A. Nolan, C. O'Neill and S. Smith (2007). The Provision and Use of Health Services, Health Inequalities and Health and Social Gain, Dublin: ESRI, https://www.esri.ie/publications/the-provision-and-use-of-health-services-health-inequalities-and-health-and-social-gain