Why Olanzapine Beats Risperidone, Risperidone Beats Quetiapine, and Quetiapine Beats Olanzapine: An Exploratory Analysis of Head-to-Head Comparison Studies of Second-Generation Antipsychotics. - Heres,S.; Davis,J.; Maino,K.; Jetzinger,E.; Kissling,W.; Leucht,S. (Am J Psychiatry, 2006)