title: Effects of smoking on fetal heart rate variability during gestational weeks 27 to 32.
mesh_terms: D001794:Blood Pressure; D005069:Evaluation Studies as Topic; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005865:Gestational Age; D006339:Heart Rate; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D011674:Pulse; D012907:Smoking; D013997:Time Factors