| http://www.w3.org/ns/prov#value | - Quote: ???The objective appearance of negative symptoms in schizophrenia and other psychotic disorders may be a direct reflection of a primary neural abnormality or may be secondary to a variety of factors such as neuroleptic side effects, depression, positive symptoms, or environmental understimulation.??? Source: In PubMed from Compr Psychiattry. 1995 Nov-Dec;36(6):421-7.
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