Using a pessary during radiotherapy in reducible pelvic organ prolapse and vaginal cancer: a case report and review of the literature - Gultekin, Melis; Esen, Caglayan; Akgor, Utku; Salman, Mehmet; Tuncel, Murat; Ozmen, Mustafa; Yildiz, Ferah (Journal of Contemporary Brachytherapy, 2020)