Topotecan vs. treosulfan in recurrent ovarian cancer (OC) after initial therapy with platinum and paclitaxel. A prospective randomized phase III study. - Meier,W.; Dubois,A.; Kuhn,W.; Pfisterer,J.; Kimmig,R.; Olbricht,S.; Richter,B. (Proc Am Soc Clin Oncol, 2003)