Sonographic assessment of the incompetent cervix during pregnancy.
Marder
S J
SJ
Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia 19104-4283, USA.
Jackson
M
M
D002584:Cervix Uteri / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal; D002581:Uterine Cervical Incompetence / Q000000981:diagnostic imaging* / Q000628:therapy