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Correlation between the dysbiosis index ((A); DI) and the severity of symptoms ((B); S-score) and the urinary levels of homophilic acid (HVA) and 5-hydroxy acetic acid (5-HIAA) ratio (HVA/HIA) in patients with functional constipation (n = 40). The correlations were analyzed using the Spearman rank test with the rho rank correlation coefficient (r).
