Endometrial HyperplasiaEndometrial NeoplasmsHyperplasiaEndometriumProgestinsUterine DiseasesPolypsCarcinoma, EndometrioidLevonorgestrelUterine HemorrhageEndometritisHysterectomyIntrauterine Devices, MedicatedCurettageUterine NeoplasmsContraceptive Agents, FemaleDilatation and CurettageLynestrenolPrecancerous ConditionsAnimals, ZooProstatic HyperplasiaUterusAdenocarcinomaCarcinoma in SituHysteroscopyImmunohistochemistryRats, Mutant StrainsWorld Health OrganizationAdrenal Hyperplasia, CongenitalLeiomyoma