Bergman, P., Lindh, Å. U., Björkhem-Bergman, L., & Lindh, J. D. (2013). Vitamin D and Respiratory Tract Infections: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Public Library of Science.
शिकागो स्टाइल उद्धरणBergman, Peter, Åsa U. Lindh, Linda Björkhem-Bergman, और Jonatan D. Lindh. Vitamin D and Respiratory Tract Infections: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Public Library of Science, 2013.
एमएलए उद्धरणBergman, Peter, Åsa U. Lindh, Linda Björkhem-Bergman, और Jonatan D. Lindh. Vitamin D and Respiratory Tract Infections: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Public Library of Science, 2013.
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