Esa, Dekta Filantropi, Hamzah Shatri, Cleopas Martin Rumende, Adityo Susilo, Hasan Maulahela, Achmad Fauzi, and Marcellus Simadibrata. “Validity and Reliability of the Indonesian Version of the 9-Item Inflammatory Bowel Disease Questionnaire (IBDQ-9)”. Medical Journal of Indonesia 32, no. 3 (December 22, 2023): 168-72. Accessed May 21, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/6848.