Breast Milk ExpressionBreastCarcinoma, Ductal, BreastBreast DiseasesBreast FeedingBreast Neoplasms, MaleReceptors, EstrogenMammographyFibrocystic Breast DiseaseCell Line, TumorBreast ImplantsReceptor, erbB-2Breast Self-ExaminationReceptors, ProgesteroneTamoxifenGene Expression Regulation, NeoplasticCarcinoma, Intraductal, NoninfiltratingMastectomyCarcinoma, LobularPrognosisTumor Markers, BiologicalProton Pump InhibitorsNeoplasm InvasivenessUltrasonography, MammaryNeoplasm MetastasisGenes, BRCA1Antineoplastic Agents, HormonalLymphatic MetastasisRisk FactorsCase-Control StudiesNeoplasm StagingImmunohistochemistryPostmenopause