1. Trends in incidence of cervical cancer in the Nordic countries;Hakama, M.,1982
2. Follow up of women with dysplasia of the uterine cervix;Armstrong, A.,1980
3. Women with positive cervical smears but without surgical intervention. A follow up study;Kinlen, L.J.; Al, Spriggs;Lancet,1978
4. Screening for cervical cancer;Department of Health and Social Security Health Services Development,1984
5. The prevention of cancer of the cervix by cytological screening of the population;Yule, R.,1984