Occurrence and influencing factors of extrauterine growth retardation in premature infants not older than 34 weeks old
HU Xiao-shan, ZHANG Jun, LI Meng-meng, YU Zhang-bin
Chinese Journal of Child Health Care . 2021, (9): 1030 -1033 .  DOI: 10.11852/zgetbjzz2020-1261


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