title: Pregnancy levels of estrogen and progesterone: the double-edged sword.
authors: Gianluigi
authors: G
authors: Ferretti
authors: Alessandra
authors: A
authors: Felici
authors: Francesco
authors: F
authors: Cognetti
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001721:Birth Intervals; D001943:Breast Neoplasms / Q000473:pathology*; D004967:Estrogens / Q000378:metabolism*; D005260:Female; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D009367:Neoplasm Staging; D009664:Norway; D010298:Parity; D011247:Pregnancy; D011252:Pregnancy Complications, Neoplastic / Q000473:pathology; D011374:Progesterone / Q000378:metabolism*; D017584:Reproductive History; D012307:Risk Factors
chemical_list: D004967:Estrogens; D011374:Progesterone