Early Intervention for Infants & Toddlers with Disabilities and their Families: Participants, Services, and Outcomes Kathleen Hebbeler et al. (U.S. Office of Special Education Programs and SRI International, January 2007). Final Report of the National Early Intervention Longitudinal Study (NEILS). Available online at: http://www.sri.com/neils/reports.html From website: This report from the 10-year NEILS summarizes key findings from the study and notes their implications for policy, practice, and additional research. This report finds that children with developmental problems are in poorer health. http://www.sri.com/neils/reports.html