title: Phototherapy effect on the incidence of patent ductus arteriosus.
mesh_terms: D004374:Ductus Arteriosus, Patent / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D007231:Infant, Newborn; D010789:Phototherapy / Q000009:adverse effects*; D011835:Radiation Protection / Q000379:methods; D012107:Research Design