1. Demographic trends in tubal sterilization;DeStefano;Am J Public Health,1982
2. Centers for Disease Control, Center for Health Promotion and Education. Surgical Sterilization Surveillance: Tubal Sterilization 1976–78. U.S. Department of Health and Human Services, Public Health Service, Atlanta, GA, March 1981.
3. Pokras R. Surgical and non-surgical procedures in short-stay hospitals, United States, 1979. Vital and Health Statistics. Series 13, No. 70. DHHS Pub. No. (PHS) 83-1731. National Center for Health Statistics. Public Health Service. Washington. U.S. Government Printing Office, February 1983.
4. Graves E, Haupt B. Utilization of short-stay hospitals, United States, 1981. Annual summary. Vital and Health Statistics. Series 13, No. 72. DHHS Pub. No. (PHS) 83-1733. National Center for Health Statistics. Public Health Service. Washington: U.S. Government Printing Office, September 1983.
5. Graves E. Utilization of short-stay hospitals, United States 1982. Annual summary. Vital and Health Statistics. Series 13, No. 78. DHHS Pub. No. (PHS) 84-1379. National Center for Health Statistics. Public Health Service. Washington: U.S. Government Printing Office, August 1984.