Rahman , Md Mahmudur, and Hafeza Aftab. “Validation of Bengali Version of Functional Digestive Disorders Quality of Life Questionnaire”. Bangladesh Journal of Medicine 35, no. 20 (June 6, 2024): 169–170. Accessed September 8, 2025. https://www.banglajol.info/index.php/BJMED/article/view/73450.