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Article Source: Vitamin D and Respiratory Tract Infections: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Bergman P, Lindh ÅU, Björkhem-Bergman L, Lindh JD (2013) Vitamin D and Respiratory Tract Infections: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. PLOS ONE 8(6): e65835. doi: 10.1371/journal.pone.0065835

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