No abstract available
MeSH terms
-
Echocardiography, Doppler, Pulsed / methods*
-
Female
-
Fetal Heart / diagnostic imaging*
-
Fetal Heart / physiology*
-
Gestational Age
-
Heart Rate / physiology*
-
Humans
-
Pregnancy
-
Reference Values
-
Ultrasonography, Prenatal / methods*