Metformin for neurocognitive dysfunction in schizophrenia: a systematic review - Qin, Zhen-Juan; Shi, Zhan-Ming; Li, Li-Juan; Wei, Xin; Hu, Hui-Lin; Wei, Wei; Xie, Zhi-Yuan; Ji, Hang-Xi; Wei, Yu-Hua; Zheng, Wei (Frontiers in Psychiatry, 2025)