Comparative study on the mortality rate of children under 5 years old between China and Russia from 1990 to 2017
LI Ming-yang, WANG Shu-xia, LIU Xi-bo, WANG Yun, CAO Jing, HU Ji-hong
Chinese Journal of Child Health Care . 2021, (9): 1021 -1025 .  DOI: 10.11852/zgetbjzz2020-1228


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