P Ljungman, L Perez-Bercoff, J Jonsson, G Avetisyan, E Sparrelid, J Aschan, L Barkholt, K Larsson, J Winiarski, Z Yun, and O Ringden. 2006. “Risk Factors for the Development of Cytomegalovirus Disease After Allogeneic Stem Cell Transplantation”. Haematologica 91 (1). Pavia, Italy, 78-83. https://doi.org/10.3324/%x.