Strasser B, et al. Probiotic supplements beneficially affect tryptophan-kynurenine metabolism and reduce the incidence of upper respiratory tract infections in trained athletes. Nutrients 2016

Strasser B, Geiger D, Schauer M, Gatterer H, Gostner J, Burtscher M, Fuchs D. Probiotic supplements beneficially affect tryptophan-kynurenine metabolism and reduce the incidence of upper respiratory tract infections in trained athletes: a randomized, double-blinded, placebo-controlled trial. Nutrients 2016; 8(11). pii: E752.

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