To explore the potential mechanisms of cognitive impairment in children with MRI-negative pharmacoresistant epilepsy due to focal cortical dysplasia: A pilot study from gray matter... oleh Yilin Zhao, Jieqiong Lin, Xinxin Qi, Dezhi Cao, Fengjun Zhu, Li Chen, Zeshi Tan, Tong Mo, Hongwu Zeng