Survey on vaccination rate of the expanded program on immunization in migrant concentration areas of Tianjin in 2024 and two-level quality control evaluation
QU Jiangwen, SU Jingyang, DING Yaxing, ZHANG Guoping, WU Xiaoli, ZHANG Ying
OCCUPATION AND HEALTH . 2026, (13): 1812 -1816 . 

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