Regarding the outcomes assessed at a three months follow-up, the investigators expect to find that the differences found between the two groups in the depressive symptoms severity and the pain-related variables decreases will be maintained at follow-up. Furthermore, at follow-up the percentage of women in remission from the diagnosis of depression (as well as the percentage of women responding to treatment) will continue to be greater in the experimental arm than in the comparison arm. Similarly, after follow-up, the percentage of women who show a clinically significant reduction in pain intensity will continue to be greater in the experimental arm than in the comparison arm. The differences found after the follow-up in the pain-related variables will be mediated by the differences found in depressive symptoms severity.