Estimated enrollment: 45 patients Estimated Study start Date: November 2008 Estimated Study Completion date: November 2012 Number of arms: 3 Interventions details: H2 coil device for Transcranial Magnetic Stimulation with MAGSTIM to prefrontal and parieto-temporal regions bilaterally with frequency 10Hz in one arm, 1Hz in the second arm, and sham-stimulation with frequency 10Hz/1Hz in third arm.