Ultrasound examination of the placenta.
D000037:Abruptio Placentae / Q000175:diagnosis; D005260:Female; D005325:Fetal Organ Maturity; D005865:Gestational Age; D006801:Humans; D008168:Lung / Q000196:embryology; D010920:Placenta; D010923:Placenta Previa / Q000175:diagnosis; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014463:Ultrasonography