Epidemiology, Outcome and Risk Factors Analysis of Viral Infections in Children and Adolescents Undergoing Hematopoietic Cell Transplantation: Antiviral Drugs Do Not Prevent Epstei... oleh Czyzewski K, Dziedzic M, Salamonowicz M, Fraczkiewicz J, Zajac-Spychala O, Zaucha-Prazmo A, Gozdzik J, Galazka P, Bartoszewicz N, Demidowicz E, Styczynski J