No abstract available
MeSH terms
-
Cervical Length Measurement / instrumentation
-
Cervix Uteri / diagnostic imaging*
-
Delivery, Obstetric / trends
-
Female
-
Gestational Age
-
Humans
-
Pregnancy
-
Premature Birth / diagnosis*
-
Premature Birth / epidemiology
-
Sensitivity and Specificity
-
Ultrasonography / methods*
-
Uterine Contraction / physiology*