Prevalence and risk factors for psychotic symptoms in young, first-episode and drug-naïve patients with major depressive disorder.

"Declarations Ethics approval and consent to participateThe protocol of this research project was approved by the Institutional Review Board (IRB) of the First Hospital of Shanxi Medical University (ID No. 2016-Y27). Therefore, all clinical trials described in the manuscript were carried out in accordance with Declaration of Helsinki and all subjects were obtained informed consent. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding The study was supported by the Suzhou Gusu Health Talents Scientific Research Project (GSWS2021053, GSWS2019070), the Scientific and Technological Program of Suzhou (SS202069), the Key Diagnosis and treatment Program of Suzhou (LCZX202016) and the Suzhou clinical Medical Center for mood disorders(Szlcyxzx202109)."