You will complete the symptom questionnaire in the clinic or by telephone 2 times a week. You will be asked about symptoms you may be experiencing and how they may be interfering with your normal daily activities. You will complete the symptom questionnaire during one of your regular clinic visits. If you do not have a clinic visit scheduled around the time that the questionnaire needs to be completed, a member of the study staff will call you at your home at a time that is convenient for you. The symptom questionnaire should take about 5 minutes to complete each time.