Development and validation of novel models based on clonality immunoglobulin gene rearrangement for evaluation of bone marrow involvement and prognostic prediction in patients with diffuse large B-cell Lymphoma: a multicenter retrospective study - Zelin Liu; Qianping Li; Ruiqi Liu; Yangyang Ding; Ya Liao; Linhui Hu; Lianfang Pu; Chunhua Zhu; Shenghui Zhang; Shudao Xiong (Frontiers in Immunology, 2025)