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Schizophrenia - Symptoms and causes - Mayo Clinic
Schizophrenia: Symptoms, Causes, Treatment, and Prognosis - Healthline
The 10 Most Common Signs of Schizophrenia | Psych Central
Schizophrenia Symptoms: Positive and Negative Symptoms - WebMD
Schizophrenia - World Health Organization (WHO)
Schizophrenia: Definition, Symptoms, Causes, Diagnosis, Treatment - WebMD
Schizophrenia: What It Is, Causes, Symptoms & Treatment - Cleveland Clinic
Symptoms - Schizophrenia - NHS
Schizophrenia - National Institute of Mental Health (NIMH)
Psychiatry.org - What is Schizophrenia?