Patients were randomly assigned to one of four intravenous regimens that were repeated at 21-day intervals. Control treatment consisted of cisplatin (at a dose of 50 mg per square meter of bodysurface area) plus paclitaxel (at a dose of 135 or 175 mg per square meter on day 1). The nonplatinum combination chemotherapy consisted of topotecan (at a dose of 0.75 mg per square meter on days 1 to 3) plus paclitaxel (at a dose of 175 mg per square meter on day 1). Each of these regimens was studied with and without bevacizumab (at a dose of 15 mg per kilogram of body weight on day 1). Treatment was discontinued at the onset of disease progression or the development of unacceptable toxic effects, or if the patient had a complete response.