Prednisone Terminated Phase 2 Trials for Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue / Testicular Lymphoma / Splenic Marginal Zone Lymphoma / Nodal marginal zone B-cell lymphomas / Noncontiguous Stage II Adult Diffuse Large Cell Lymphoma / Waldenström's Macroglobulinemia (WM) / Contiguous Stage II Adult Diffuse Large Cell Lymphoma / Stage I Adult Diffuse Large Cell Lymphoma Treatment