The second group (20 patients) will receive 10 sessions of low-frequency rTMS over the right orbitofrontal cortex (OFC) by means of a butterfly coil, the international 10-20 EEG system will be used to position the coil over the right OFC, at the right frontopolar 2 (Fp2) electrode site, using the following parameters: 120% motor threshold, 1 Hz, 3 trains, each of 500 pulses with a 40 seconds inter-train interval allowing the coil to cool.