Faghihi, Amir H, Shahram Agah, Mohsen Masoudi, Seyed M.S Ghafoori, and Abbas Eshraghi. 2015. “Efficacy of Probiotic Escherichia Coli Nissle 1917 in Patients With Irritable Bowel Syndrome: A Double Blind Placebocontrolled Randomized Trial”. Acta Medica Indonesiana 47 (3). http://www.actamedindones.org/index.php/ijim/article/view/33.