Step-CoT: Stepwise Visual Chain-of-Thought for Medical Visual Question Answering. - Lin Fan; Yafei Ou; Zhipeng Deng; Pengyu Dai; Hou Chongxian; Jiale Yan; Yaqian Li; Kaiwen Long; Xun Gong 002; Masayuki Ikebe; Yefeng Zheng 001 (CoRR, 2026)