A combined biparietal diameter and abdominal circumference graph: using a system velocity of 1540 metres per second.
D000005:Abdomen / Q000196:embryology; D000886:Anthropometry / Q000379:methods; D005260:Female; D005323:Fetal Monitoring / Q000379:methods*; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography / Q000379:methods*