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Low Maternal Vitamin D Status during the Second Trimester of Pregnancy: A Cross-Sectional Study in Wuxi, China
- Jian-Ping Xiao,
- Jia Zang,
- Jing-Jing Pei,
- Fei Xu,
- Yan Zhu,
- Xiang-Peng Liao
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- Published: February 6, 2015
- https://doi.org/10.1371/journal.pone.0117748