Rahman, Md. Zahidur, et al. “Efficacy of Probiotics in Irritable Bowel Syndrome: A Randomized, Double Blind Placebo-Controlled Study”. Bangabandhu Sheikh Mujib Medical University Journal, vol. 6, no. 1, Aug. 2016, pp. 21-28, doi:10.3329/bsmmuj.v6i1.29020.