1. E, Simonsen, 1983, Malignant tumors of the vulva—A study of the effects of radiotherapy, surgery and chemotherapy in combination or used alone, Lund, Sweden
2. C, Muir, J, Waterhouse, T, Mack, J, Powell, S, Whelan, 1987, Cancer Incidence in Five Continents, V, International Agency for Research on Cancer, Lyon
3. Case report—A 16 year old girl with invasive carcinoma in the vulva;Nilsson;Acta Obstet Gynecol Scand,1990
4. Non parametric estimation from incomplete observations;Kaplan;J Am Med Assoc,1958
5. Regression models and life tables;Cox;J R Statist Soc,1972