title: [Usefulness of electrophonocardiography during pregnancy].
mesh_terms: D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D005318:Fetal Heart / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D007743:Labor, Obstetric; D010701:Phonocardiography; D011247:Pregnancy
vernacular_title: La utilidas de la electro-fono-crdiografía durante el embarazo.