Ultrasound dating of pregnancy--still controversial?
Persson
P H
PH
Cura Kliniken, Malmö, Sweden.
D036861:Delivery, Obstetric; D005314:Embryonic and Fetal Development; D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D016216:Ultrasonography, Prenatal