“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”. 2024. Journal of Clinical Nutrition and Food Science 7 (1): 40-47. https://doi.org/10.5281/zenodo.22339468.