You will be asked to fill-out questionnaires at 3 different times (when you join this study, 3 months later, and 6 months later). The questionnaires will include questions about how your chronic GvHD impacts your body, your day-to-day activities, your emotions and perceptions, and your social and sexual life. Each questionnaire has 195 questions. Each should take about 20-30 minutes to complete, but you will also be asked how long it takes you to complete each questionnaire. For most participants, these visits will be part of your routine schedule for follow-up for the disease.