A third course of indomethacin.
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D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage*; D004374:Ductus Arteriosus, Patent / Q000188:drug therapy*; D006801:Humans; D007213:Indomethacin / Q000008:administration & dosage*; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases / Q000188:drug therapy; D019233:Retreatment
D000894:Anti-Inflammatory Agents, Non-Steroidal; D007213:Indomethacin