Ultrasonography in obstetrical diagnostics.
D000013:Congenital Abnormalities / Q000175:diagnosis; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis; D007746:Labor Presentation; D010920:Placenta; D010922:Placenta Diseases / Q000175:diagnosis; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis; D011272:Pregnancy, Multiple; D014463:Ultrasonography