Gestational age: what to measure and when.
Blum
L
L
Department of Radiology, Thomas Jefferson University Hospital, Jefferson Medical College, Philadelphia, PA 19107-5244.
Kurtz
A B
AB
D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods*