title: Letters: Fetal cervical hyperextension.
mesh_terms: D002585:Cesarean Section; D005260:Female; D006801:Humans; D007746:Labor Presentation / Q000009:adverse effects*; D007744:Obstetric Labor Complications / Q000601:surgery*; D011247:Pregnancy; D002577:Uterine Cervical Diseases / Q000209:etiology*