[The colpocytological test of estrogen activity in determination of the duration of pregnancy].
D003271:Contraceptive Agents, Female; D004967:Estrogens; D005260:Female; D006801:Humans; D011247:Pregnancy; D014626:Vaginal Smears
D003271:Contraceptive Agents, Female; D004967:Estrogens
ESTROGENS; PREGNANCY; VAGINAL SMEARS