Prevalence and risk factors of psychotic symptoms in middle-aged patients with first-episode drug-naïve major depressive disorder: A large-scale cross-sectional study. - Liu, Shilin; Lin, Keyi; Zhang, Yang; Gao, Yaotian; Wang, Wei; Du, Mengcheng; Jiang, Tao; Zhou, Min; Zhang, Xiangyang (Journal of Affective Disorders, 2023)