Hybrid RAG-Empowered Multimodal LLM for Secure Data Management in Internet of Medical Things: A Diffusion-Based Contract Approach. - Cheng Su; Jinbo Wen; Jiawen Kang 001; Yonghua Wang 001; Yuanjia Su; Hudan Pan; Zishao Zhong; M. Shamim Hossain (IEEE Internet Things J., 2025)