Reduced-dose anti-thymocyte globulin combined with post-transplant cyclophosphamide versus standard ATG for graft-versus-host disease prophylaxis in haploidentical hematopoietic stem cell transplantation: a focus on chronic GVHD reduction. - Guo W; Li B; Tang L; Peng L; Guo S (Leukemia & lymphoma, 2026)