* If intolerance/hypersensitivity or non-response in the past to one of the compounds is documented, the patient can still participate; however, randomization will take place by blocking that specific compound. That is, the patient will be randomized on either the oral or the depot arm of the other compound. This procedure of blocking one compound is also accepted for patients who have experienced too many side effects to one of the compounds in the past, as documented in the patient's medical record. The decision to block that specific compound for randomization in these cases is up to the discretion of the treating physician who will carefully balance this decision and clearly document it in the medical record.