Placental position and breech presentation.
D000818:Animals; D001946:Breech Presentation; D005260:Female; D006801:Humans; D007746:Labor Presentation; D007743:Labor, Obstetric; D008322:Mammals; D010920:Placenta / Q000033:anatomy & histology*; D011247:Pregnancy
LABOR, PRESENTATION; PLACENTA/anatomy and histology