1. DHHS Publ. No. PHS91-50212;US Department of Health and Human Services,1990
2. Illinois Department of Public Health. Statewide Health Needs Assessment: Towards a Healthy Illinois 2000. Springfield, IL (USA): Illinois Department of Public Health, September 1993.
3. Greenwald P, Sondik EJ, eds. Cancer Control Objectives for the Nation, 1985?2000. NCI Monogr 1986; 2: 71 (Table B-3), and 2: 73 (Table B-8)..
4. Quality Control Report Series;S Roffers,1993
5. Quality Control Report Series;J. Snodgrass,1993