Status and influencing factors of delayed initiation of lactation phase Ⅱ in parturients in Baoshan District, Shanghai
HUANG Hai-li, GU Xiao-qing, FENG Hong-wei
South China Journal of Preventive Medicine . 2021, (12): 1493 -1496 .  DOI: 10.12183/j.scjpm.2021.1493

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