miR-181b-5p is Upregulated in First-Episode Drug-Naive Schizophrenia and Correlates with Symptom Severity and Cognitive Deficits: A Case-Control Study0 views•2026•NeuroscienceHaoran Li1, Xingzhe Han1, Chen Wang1Haoran Li1Xingzhe Han1Chen Wang11Department of Psychiatric Nursing, Qinhuangdao Fifth HospitalDepartment of Psychiatric Nursing, Qinhuangdao Fifth Hospital