Similarly, a fetus with a 1-SD score larger abdominal-to-head circumference (AC/HC ... Second, because fetal ultrasound examinations in early pregnancy were used to establish gestational age ...

Using ultrasound, your provider can take various measurements (head circumference and diameter ... they use to come up with the estimated fetal weight (EFW) and height, and the formulas aren ...

Low first trimester vitamin D concentrations are associated with risk for preterm birth; higher levels correlate with fetal growth.