Engblom, P. R., Grènman, S. E., Klemi, P. J., Hirvonen, T. E., Rantanen, V. T., & Salmi, T. A. (1995). The Role of Cul-de-Sac Aspiration Cytology in the Follow-up of Ovarian Cancer. Acta Oncologica, 34(6), 783–785. https://doi.org/10.3109/02841869509127187