1. Change in American Cancer Society checkup guidelines for detection of cervical cancer;Fink;CA,1988
2. Guide to clinical preventive services,1989
3. Organizations speak out on Pap smear frequency;Washington Rep,1988
4. Cervical cancer screening programs: summary of the 1982 Canadiar Task Force Report;Can Med Assoc J,1979
5. The Pap smear revisited;Shield;Aust NZ J Obstet Gynecol,1987