<qa>  How many tablespoons of blood will be taken at these visits?After the study ends, you will return for checkups every 3 months in the first year, every 4 months in Years 2 and 3, and every 6 months in Years 4 and 5. After that, checkups will be needed once a year. Blood about 2 tablespoons and bone marrow samples will be taken at these visits. 