Abbreviations
very preterm infantsvery low birth weight infantsneonatal intensive care unitChinese Neonatal Networkparenteral nutritionnecrotizing enterocolitislate-onset sepsisbronchopulmonary dysplasiaparenteral nutrition-associated cholestasisextrauterine growth retardationpostmenstrual agerespiratory distress syndromehemodynamically significant patent ductus arteriosusearly-onset sepsisretinopathy of prematuritymetabolic bone diseasefeeding intolerancelong-chain polyunsaturated fatty acidsmedium-chain triglycerideslong-chain triglycerides