At each follow-up visit, you will have a complete physical exam. The chest x-rays and/or CT or MRI scans will be repeated every 2 months, and at the time you complete the trial, or at any other time if necessary. Blood tests (about 1 tablespoon) will be performed every 2 months. Information about the medications you are taking, or medical problems you have had since your last visit will be collected. At each follow-up visit, you will also be asked to complete a one page, paper and pencil check off sheet. You will be asked to identify symptoms you may be having and to note the amount of distress each symptom is causing you.