title: The anterior uterocervical angle as a new ultrasound marker of preterm labor in pregnant women with a history of endocrine and combined infertility
abstract: In women with endocrine and concomitant infertility there is a high frequency of the threat of termination of pregnancy at different periods, most often after stimulation of ovulation or as a result of assisted reproductive technologies, due to the formation of insufficiency of the luteal phase of the cycle in combination with hyperandrogenism and functional cervical insufficiency in every third pregnant woman. Regardless of the reasons, today there are no clear and early diagnostic criteria for
journal: Reproductive Endocrinology