After 4 months, if the patient's health is good, they will not need to come to the hospital so often. The visits to the doctor should be more like they were before the bone marrow transplant. Since problems may happen months after the transplant and this is a new way to treat sickle cell disease and thalassemia the patient will need to have exams and blood tests done every few months during the first and second years after their transplant. After that, if all is well, the patient will need to be examined and have blood tests 4 times a year.