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3. Oral ibuprofen and ductus arteriosus in premature infants: a randomized pilot study;Aly;American Journal of Perinatology,2007
4. Oral ibuprofen solution (O) is efficacious for the treatment of patent ductus arteriosus (PDA) in premature infants: A randomized controlled trial;Lotfy
5. Multicentre randomized double-blind placebo controlled trial of ibuprofen L-Lysine intravenous solution (IV Ibuprofen) in premature infants for the early treatment of patent ductus arteriosus (PDA);Aranda