Oestrogens and progesterone concentrations and risk of ectopic pregnancy: an epidemiological point of view.
Parazzini
F
F
Istituto di Ricerche Farmacologiche Mario Negri, Miláno, Italy.
D004812:Epidemiologic Methods; D004967:Estrogens / Q000097:blood*; D005260:Female; D006801:Humans; D009994:Osmolar Concentration; D011247:Pregnancy; D011271:Pregnancy, Ectopic; D011374:Progesterone / Q000097:blood*; D012307:Risk Factors
D004967:Estrogens; D011374:Progesterone