AY Leung, J Kwok, AK Lie, P Chen, FE Chen, and R Liang. 2001. “Helper T-Lymphocyte Precursor Frequency Predicts the Occurrence of Graft-Versus-Host Disease and Disease Relapse After Allogeneic Bone Marrow Transplantation from HLA-Identical Siblings”. Haematologica 86 (6). Pavia, Italy, 652-56. https://doi.org/10.3324/%x.