Kaplan-Meier curves showing OS of patients exposed to AO (red) and those unexposed to AO (blue) with each histology. OS curves for each lymphoid malignancy subtype in veterans with and without AO exposure. BL, Burkitt lymphoma; CI, confidence interval; CTCL, cutaneous T-cell lymphoma; FL, follicular lymphoma; HL, Hodgkin lymphoma; LPL, lymphoplasmacytic lymphoma; MCL, mantle cell lymphoma; MTNKL, mature T-cell and natural killer cell lymphoma; NR, not reached.