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| Methods | Randomised. |
| Participants | People with schizophrenia. |
| Interventions | Risperidone versus placebo versus PF‐02545920. (no further detail of the drug was available). |
| Outcomes | No useable data available. |
| Notes | The paper didn't report any data relevant to pre‐defined outcomes of this review. We have contacted trial authors for further data, but haven't received any reply. |
