1. International Agency for Research on Cancer (WHO), International Association of Cancer Registries, Cancer Incidence in Five Continents—Volume VI, Lyon, IARC Scientific Publications 120, 1992
2. International Agency for Research on Cancer (WHO), International Association of Cancer Registries, Cancer Incidence in Five Continents—Volume IV, Lyon, IARC Scientific Publications 42, 1982
3. Papillomaviruses in human cancer;zur Hausen;Cancer,1987
4. Pathobiology of early vulvar neoplasia;Crum;Curr Opin Obstet Gynecol,1997
5. Vulvar squamous cell carcinoma and papillomaviruses: two separate entities;Andersen;Am J Obstet Gynecol,1991