Holleczek, Bernd, Jalid Sehouli, and Jana Barinoff. 2018. “Vulvar Cancer in Germany: Increase in Incidence and Change in Tumour Biological Characteristics from 1974 to 2013”. Acta Oncologica 57 (3):324-30. https://doi.org/10.1080/0284186X.2017.1360513.