Horcajadas, F. A.; Soto, J. A.; García-Cantalapiedra, M. J.; Calvín, J. L. R.; Morales, J.; Salgado, M. Effectiveness and Tolerability of Addition of Risperidone in Obsessive-Compulsive Disorder With Poor Response to Serotonin Reuptake Inhibitors. Actas Esp Psiquiatr 2006, 34, 147-152.