1. Physician Payment Review Commission:The Costs of Providing Screening Mammography: Report to Congress. Washington, DC: US Government Printing Office, No. 89-2, 1989.
2. Williams, RD, Edwards, K and Hane, N, Barriers to breast cancer screening in older women.Fam Community Health 10: 51?56, 1987.
3. Centers for Disease Control, Use of mammography?United States, 1990.MMWR 39:621?630, 1990.
4. Dawson, DA and Thompson, GB:Breast Cancer Risk Factors and Screening: United States, 1987. Hyattsville, MD: US Department of Health and Human Services, DHHS Publication No. (PHS) 90?1500, 1990.
5. NCI Breast Cancer Screening Consortium, Screening mammography: A missed clinical opportunity?JAMA 264: 54?58, 1990.