DOI:
10.1055/s-00000003
Aktuelle Ernährungsmedizin
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References
Laaksi I, Ruohola JP, Tuohimaa P et al.
An association of serum vitamin D concentrations < 40 nmol/L with acute respiratory tract infection in young Finnish men.
Am J Clin Nutr 2007;
86: 714-717
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