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| DOI：doi:10.13407/ j.cnki.jpp.1672-108X.2019.10.019 |
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| Correlation between Vitamin A and Bronchial Asthma in Children |
| Li Haiping, Bai Liping, Hou Yutong, Yu Jing |
| (Hongqi Hospital of Mudanjiang Medical University, Heilongjiang Mudanjiang 157000 ,China) |
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