Abriani, Sayekti, Khurin ’ien Mukhoyyaroh, Ahmad Subhan Yazid, and Maria Ulfah Siregar. 2014. “Recommendation System of Self-Medication for Mild Digestive Diseases With Dempster Shafer Method”. IJID (International Journal on Informatics for Development) 3 (1):1-7. https://doi.org/10.14421/ijid.2014.%x.