title: [Comparative evaluation of the TM and Doppler methods in detecting fetal cardiac activity in the I trimester of pregnancy].
mesh_terms: D004301:Doppler Effect; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring / Q000379:methods*; D006339:Heart Rate; D006801:Humans; D009991:Oscillometry / Q000379:methods; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D014463:Ultrasonography
vernacular_title: Sravnitel'naia otsenka TM-metoda i metoda Dopplera v vyiavlenii serdechnoĭ deiatel'nosti ploda v I trimestre beremennosti.