Assessment of fetal anatomy at 12 to 13 weeks of gestation by transabdominal and transvaginal sonography.
Braithwaite
J M
JM
University Department of Obstetrics and Gynaecology, The Royal Free Hospital, London, UK.
Armstrong
M A
MA
Economides
D L
DL
D005260:Female; D005333:Fetus / Q000033:anatomy & histology*; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal