The role of nutrition in analysis of risk factors and short-term outcomes for late-onset necrotizing enterocolitis among very preterm infants: a nationwide, multicenter study in China.

"Declarations Ethics approval and consent to participateThe research protocol was approved by the Ethics Committee of Women and Children’s Hospital affiliated to Xiamen University/Xiamen Maternal and Child Health Hospital (Batch number KY-2019-016). All procedures performed in studies involving human participants were in accordance with the ethics standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethics standards. The parents of all study participants provided written informed consent. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by Guidance Project of Xiamen Medical and Health in 2019 (3502Z20199077) and Guidance Project of Xiamen Medical and Health in 2021 (3502Z20214ZD1225)."

"Trial registration ChiCTR1900023418 (26/05/2019)."