A multi-agent GraphRAG framework for pharmacotherapy safety verification in clinical decision support systems - Victor Ryzhenko; Bogdan Burlaka; Igor Belenichev; Kristina Burlaka; Olena Aliyeva; Nina Bukhtiyarova; Iryna Halabitska; Pavlo Petakh; Oleksandr Kamyshnyi (Frontiers in Medicine, 2026)