Mulianda, C. A., B. Murti, and H. Prasetya. “Associations Between Anxiety, Depression, and Poor Quality of Sleep on the Risk of Irritable Bowel Syndrome: A Meta-Analysis”. Journal of Epidemiology and Public Health, vol. 8, no. 1, Jan. 2023, pp. 45-62, doi:10.26911/jepublichealth.2023.08.01.05.