Risk factors for low Apgar score at 1 minute after birth in very low/extremely low birth weight infants: a retrospective multicenter study
Jiangsu Multicenter Study Collaborative Group for Breastmilk Feeding in Neonatal Intensive Care Units
CJCP . 2023, (9): 909 -914 .  DOI: 10.7499/j.issn.1008-8830.2306139