Daulay SA, Subagio S, Ritonga WA. EXPERT SYSTEM TO DIAGNOSE DISEASES IN THE HUMAN DIGESTIVE SYSTEM USING THE FORWARD CHAINING METHOD CASE STUDY OF PUSKESMAS HUTAGODANG HEALTH CENTER. u-net [Internet]. 2025Mar.15 [cited 2026Jan.17];8(2):22-8. Available from: https://ejurnal.univalabuhanbatu.ac.id/index.php/u-net/article/view/883