CJCP     2023 25 (2):  147-152    ISSN: 1008-8830  CN: 43-1301/R Clinical characteristics and risk factors for early-onset necrotizing enterocolitis in preterm infants with very/extremely low birth weight YU Zeng-Yuan, XU Shu-Jing, SUN Hui-Qing, LI Ming-Chao, XING Shan, CHENG Ping, ZHANG Hong-Bo, WANG Ying-Ying, YANG Zi-Jiu. Preterm Neonatal Intensive Care Unit, Children's Hospital Affiliated to Zhengzhou University，Zhengzhou 450018 Received: 2022-08-17  Revised: null  Online: null Supporting info