Maternal smoking and the timing of delivery.
D001724:Birth Weight; D005314:Embryonic and Fetal Development; D005260:Female; D005315:Fetal Diseases / Q000209:etiology; D005865:Gestational Age; D006801:Humans; D000860:Hypoxia / Q000209:etiology; D007231:Infant, Newborn; D007752:Obstetric Labor, Premature; D011247:Pregnancy; D012907:Smoking