1. National Cancer Institute, Cancer patient survival report number 5, 1976. D. H. E. W. Publications No (NIH) 77–992, Bethesda MD. National Cancer Institute 316 (1977).
2. U. S. Department of Health, Education and Welfare. National Center for Health Statistics (1977) Advanced report, final monthly statistics 1975. Monthly vital statistics report 25, no 11 (supplement). D. H. E. W. Publication No. (CHRA-77–1120). Rockville MD, February 11 (1977).
3. R. L. Egan, Mammography, xeroradiography and thermography, Clinical Obstetrics and Gynaecology 18: 197–209 (1975).
4. L. V. Ackerman, J. A. del Regato, “Cancer: diagnoses, treatment and prognosis,” 4th edition St Louis C. V. Mosby:1049 (1975).
5. R. S. Paffenbarger Jr, Value in the early diagnosis of cancer, Cancer suppl. 33: 1712–1719 (1970).