Vitamin D3 supplementation in patients with frequent respiratory tract infections: a randomised and double-blind intervention study | BMJ Open

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Infectious diseases

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Vitamin D₃ supplementation in patients with frequent respiratory tract infections: a randomised and double-blind intervention study

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Cite this article as:: Bergman P, Norlin A, Hansen S, et al

Vitamin D₃ supplementation in patients with frequent respiratory tract infections: a randomised and double-blind intervention study

BMJ Open 2012;2:e001663. doi: 10.1136/bmjopen-2012-001663