[Results of phase analysis of fetal heart activity in 690 normal pregnancies].
D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006326:Heart Auscultation; D006801:Humans; D011247:Pregnancy
Rezultati ot fazoviia analiz na surdechnata deĭnost na ploda pri 690 normalni bremennosti.