cml prognosis in adultsleukemia prognosis in older adultsdifferent types of leukemia in adultsleukemia in older adultsleukemia in elderly prognosisrare leukemia types in adultschronic lymphocetic leukemiachronic asthma symptoms in adultsadult acute lymphocytic leukemiaacute leukemia prognosisadult acute myeloid leukemiaold age leukemia prognosis