title: Ultrasonic measurement of sound velocity in the pregnant and the non-pregnant cervix uteri.
mesh_terms: D000328:Adult; D000367:Age Factors; D002584:Cervix Uteri / Q000033:anatomy & histology / Q000502:physiology*; D004547:Elastic Tissue / Q000502:physiology; D005260:Female; D006801:Humans; D008722:Methods; D010298:Parity; D011247:Pregnancy; D013997:Time Factors; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography