Two-year outcomes of a randomized controlled trial of nonintervention versus oral ibuprofen for patent ductus arteriosus in premature infants

Seung Hyun Kim, Samsung Medical Center, Seoul, Seoul-t'ukpyolsi, Republic of Korea; So Yoon Ahn, Samsung Medical Center, SEOUL, Seoul-t'ukpyolsi, Republic of Korea; Yun Sil Chang, Sungkyunkwan university, Seoul, Seoul-t'ukpyolsi, Republic of Korea; Se In Sung, Samsung Medical Center, Seoul, Seoul-t'ukpyolsi, Republic of Korea