Breast FeedingInfant, NewbornBreastAnimal FeedCarcinoma, Ductal, BreastBreast DiseasesBreast Neoplasms, MaleReceptors, EstrogenMammographyFibrocystic Breast DiseaseCell Line, TumorBreast ImplantsReceptor, erbB-2Breast Self-ExaminationReceptors, ProgesteroneEatingTamoxifenGene Expression Regulation, NeoplasticWeight GainCarcinoma, Intraductal, NoninfiltratingMastectomyMilk, HumanPrognosisPregnancyCarcinoma, LobularAnimal Nutritional Physiological PhenomenaTumor Markers, BiologicalNeoplasm InvasivenessRisk FactorsUltrasonography, MammaryNeoplasm MetastasisCase-Control StudiesGenes, BRCA1Animal HusbandrySwineAntineoplastic Agents, HormonalRandom AllocationShaken Baby SyndromeLymphatic MetastasisTime FactorsNeoplasm StagingDietImmunohistochemistryPostmenopauseWeaningMastectomy, SegmentalMammaplastyTumor Cells, CulturedBody WeightBreast Cyst