Effect of different feeding initiation formulas on very low birth weight infants
LI Xue-Mei, JIANG Jing, WU Yan, LI Xiu-Lan, CHEN Gong-Xue
CJCP . 2019, (8): 777 -782 .  DOI: 10.7499/j.issn.1008-8830.2019.08.008