Grzybowska, Dominika, et al. “The Role of the gut–brain Axis in the Pathogenesis of Depression and Anxiety Disorders: The Significance of Microbiota, Bacterial Metabolites, and Vagus Nerve Signalling — A Systematic Review”. Quality in Sport, vol. 65, Aug. 2026, p. 73951, doi:10.12775/QS.2026.65.73951.