PRL and schizophrenia: First, this is a post-hoc analysis of the SOHO patient data which included patients who were changed antipsychotic treatment for clinical reasons and are thus not representative of all patients with schizophrenia; moreover, type of antipsychotic medication was not included in the analysis Second, we have not measured prolactin levels, but in SOHO we have assessed adverse events which are potentially related to elevated prolactin levels.