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A Herbal Combination of Rhubarb Root and Fennel Seed Extract Alleviates Functional Constipation and Modulates Gut Microbiota in Adults: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial. JCNFS 2024, 7 (1), 40-47. https://doi.org/10.5281/zenodo.22339468.