Overview Endometrial Safety Study Status: Completed Trial end date: 2009-08-01 Target enrollment: Participant gender: Summary The study is designed to investigate the safety of the investigational product for the lining of the uterus (endometrium). Phase: Phase 3 Details Lead Sponsor: BayerCollaborators: Diagnostic Cytology LaboratoryLaboratorium für Klinische ForschungUniversity of California, San FranciscoTreatments: DrospirenoneEstradiolEstradiol 17 beta-cypionateEstradiol 3-benzoateEstradiol valerateNorethindroneNorethindrone acetatePolyestradiol phosphate