Schizophrenia Research
Volume 118, Issue 1 , Pages 168-175 , May 2010

DSM-IV catatonia signs and criteria in first-episode, drug-naive, psychotic patients: Psychometric validity and response to antipsychotic medication

Received 29 September 2009 ,Revised 1 December 2009 ,Accepted 19 December 2009.

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PII: S0920-9964(09)00614-8

doi: 10.1016/j.schres.2009.12.023

Schizophrenia Research
Volume 118, Issue 1 , Pages 168-175 , May 2010