Eeva Juvonen, Sanna Aalto, Jussi Tarkkanen, Liisa Volin, Klaus Hedman, Tapani Ruutu. Retrospective evaluation of serum Epstein Barr virus DNA levels in 406 allogeneic stem cell transplant patients. Haematologica 2007;92(6):819-825; https://doi.org/10.3324/haematol.10751.