Pelayanan Pasien Kanker Serviks, Kanker Ovarium, dan Kanker Endometrium di Poli Ginekologi Onkologi Sebelum dan Saat Pandemi COVID-19 di Rumah Sakit Umum Pusat Nasional Ciptomangunkusumo, Jakarta = Services for Cervical Cancer, Ovarian Cancer and Endometrial Cancer Patients at the Gynecology Oncology Clinic Before and During the COVID-19 Pandemic at the Ciptomangunkusumo National Central General Hospital, Jakarta