1. Failures of the cytology screening programme;Chamberlain;Br Med J,1984
2. Trends in the incidence of cervical cancer in Nordic countries;Hakama,1982
3. Mortality from cancer of the uterus in Canada and its relationship to screening for cancer of the cervix;Miller;Int J Cancer,1976
4. Mortality from carcinoma of the cervix uteri in Britain;MacGregor;Lancet,1978
5. First Five Years of the NHS Cervical Screening Programme;Farmery,1994