title: Persistence of the fetal circulation: a commentary.
mesh_terms: D003326:Coronary Circulation; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011652:Pulmonary Circulation; D013577:Syndrome; D014661:Vasoconstriction