1. Prevalence and incidence rates of cervical atypia;Bibbo;J. Reprod. Med.,1971
2. Intraepithelial carcinoma of the cervix associated with pregnancy;Boutselis;Obstet. Gynecol.,1972
3. The risk of cervical cancer in teen-aged girls;Christopherson;J. A. M. A.,1965
4. Relation of cervical cancer to early marriage and childbearing;Christopherson;N. Engl. J. Med.,1965
5. Carcinoma in situ of the cervix. An analysis of 861 patients;Creasman;Obstet. Gynecol.,1972