OpenTCM: A GraphRAG-Empowered LLM-based System for Traditional Chinese Medicine Knowledge Retrieval and Diagnosis. - Jinglin He; Yunqi Guo; Lai Kwan Lam; Waikei Leung; Lixing He; Yuanan Jiang; Chi Chiu Wang; Guoliang Xing; Hongkai Chen 001 (CoRR, 2025)