chronic lymphoid leukosislymphoid leukaemiachronic lymphoid leukemiachronic lymphocytic leukemiachronic myeloid leukemia treatmentschronic myelomonocytic leukemiachronic eosinophilic leukemiachronic lymphoma leukemiachronic myelogenous leukemiachronic lymphocetic leukemiachronic myeloid leukemia diagnosischronic myeloid leukemia prognosis