Effects of online high-definition transcranial direct current stimulation over left dorsolateral prefrontal cortex on predominant negative symptoms and EEG functional connectivity in patients with schizophrenia: a randomized, double-blind, controlled trial. - Yeh TC; Lin YY; Tzeng NS; Kao YC; Chung YA; Chang CC; Fang HW; Chang HA (Psychiatry and clinical neurosciences, 2025)