Behavior changes and influencing factors of firstborn children before and after the birth of the second children in a district of Chongqing
ZHOU Yuanke, LI Yueyue, FANG Bo, SHENG Lulu, WU Wenyi, XI Xuan, LIU Qin
Chinese Journal of Child Health Care . 2023, (6): 617 -622 .  DOI: 10.11852/zgetbjzz2022-1218


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