New transducer for detecting fetal heart sounds.
D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring / Q000295:instrumentation*; D006326:Heart Auscultation / Q000295:instrumentation*; D006347:Heart Sounds / Q000295:instrumentation*; D006801:Humans; D011247:Pregnancy; D014159:Transducers