Clinical Outcome of Ultrasound-Detected Perforated Necrotizing Enterocolitis without Radiographic Pneumoperitoneum in Very Preterm Infants. - Kim, Myoung Kyoung; Jeon, Tae Yeon; Kim, Kyunga; Kim, Yu Jin; Yoo, So-Young; Kim, Ji Hye; Chang, Yun Sil; Lee, Sanghoon; Seo, Jeong-Meen; Moon, Sung-Hoon (Journal of Clinical Medicine, 2023)