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2. Incidence and stage distribution in Sweden: the effect of control measures;Pettersson,1982
3. Trends in incidence in Iceland;Johannesson,1982
4. Ages and frequencies for cervical cancer screening;Knox;Br J Cancer,1976
5. Screening for cancer revised policy The recommendations ofthe DHSS Committee on Gynaecological Cytology;Draper;Health Trends,1982