An assessment of intra-uterine foetal visualisation.
D000013:Congenital Abnormalities / Q000000981:diagnostic imaging; D005260:Female; D005333:Fetus / Q000000981:diagnostic imaging*; D005865:Gestational Age; D006801:Humans; D007047:Hysterosalpingography; D007746:Labor Presentation; D008297:Male; D011247:Pregnancy; D012732:Sex Determination Analysis