<qa>  What is the time period for the new treatment?Therapy will continue for 12 weeks. Treatment will then be altered and the new treatment will be continued through Week 24. Interim Study Visits will be required at Weeks 2 and 4 Treatment Period 1 and at Weeks 14 and 16 Treatment Period 2. Subjects will be offered to be enrolled into a maintenance Protocol Study 23056 at Week 24. 