Szilagyi PG et al. 1990. The Effect of Independent Practice Association Plans on Use of Pediatric Ambulatory Medical Care in One Group Practice. Journal of the American Medical Association 263(16):2198-2203.
Vobejda B, Goldstein A. 1997. Quick Review Promised for SSI Rules: Thousands of Children Have Lost Benefits. The Washington Post, September 11, p. A9.
Wood D et al. 1994. Access to Infant Immunizations for Poor, Inner-City Families: What is the Impact of Managed Care? Journal of Health Care for the Poor and Underserved 5(2):l12-23.