In China, the low birthweight rate has shown an increasing trend, rising from 2.52% in 1992 to 3.70% in 2021, and is projected to reach 5.28% by 2030 [ 8 ].
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Evaluation of Hepatitis B Vaccine Immunogenicity in Low-Birth-Weight Infants After Complete Immunization: The Impact of Postnatal Catch-Up Growth and Maternal-Neonatal Characteristics.
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