A TRANSDUCER FOR INTRA-UTERINE FETAL PHONOCARDIOGRAPHY.
D005260:Female; D005318:Fetal Heart; D005333:Fetus; D006801:Humans; D010701:Phonocardiography; D011247:Pregnancy; D014564:Urogenital Abnormalities; D014599:Uterus / Q000002:abnormalities
FETAL HEART; PHONOCARDIOGRAPHY; PREGNANCY