GSTM1 and B-cell chronic lymphocytic leukemia: ALL: acute lymphoblastic leukemia; AML: acute myelogenous leukemia; NHL: non-Hodgkin lymphoma; WBC: white blood cell; Hb: hemoglobin; CRP: C-reactive protein; GPC: gram-positive cocci; GNR: gram-negative bacilli; CV: central venous catheter line; CRBSI: catheter-related bloodstream infection; CML: chronic myelogenous leukemia; MPAL: mixed phenotype acute leukemia; CLL: chronic lymphocytic leukemia); IQR: interquartile range