If you are found to be eligible to take part in this study, you will be assigned to 1 of 2 study groups based on the status of the disease and then you will be assigned to a cohort based on when you join this study. Each study group will be made up of 2 cohorts. Group 1 is made up of Cohorts A and B. Group 2 is made up of Cohorts C and D. Each cohort will enroll up to 20 participants each.