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ncbi.nlm.nih.gov
Bested, AC.; Logan, AC.; Selhub, EM. «Intestinal microbiota, probiotics and mental health: from Metchnikoff to modern advances: Part II – contemporary contextual research.». Gut Pathog, 5, 1, 2013, pàg. 3. DOI: 10.1186/1757-4749-5-3. PMC: 3601973.