title: QUALITATIVE ASPECTS OF INDIRECT FETAL ELECTROCARDIOGRAPHY.
mesh_terms: D004562:Electrocardiography; D005260:Female; D005318:Fetal Heart; D006801:Humans; D011247:Pregnancy; D011258:Pregnancy Tests; D011272:Pregnancy, Multiple
keywords: ELECTROCARDIOGRAPHY; FETAL HEART; PREGNANCY; PREGNANCY TESTS; PREGNANCY, MULTIPLE