Mishra, S., A. Singh, and B. L. Pandey. “Current State of Pharmacology and Therapeutics in Irritable Bowel Syndrome With Special Reference to Brain-Gut Axis”. International Journal of Basic & Clinical Pharmacology, vol. 2, no. 2, Jan. 2017, pp. 122-9, https://www.ijbcp.com/index.php/ijbcp/article/view/1223.