Role of primary surgery for persistent residual disease after more than 5 cycles of chemotherapy for primary advanced ovarian cancer - Plett, H; Harter, P; Prader, S; Ataseven, B; Heitz, F; Bommert, M; Schneider, S; Alesina, PF; Traut, A; du Bois, A (Geburtshilfe und Frauenheilkunde, 2018)